torque converter locking up at idle. I have set the idle low, and it still pulls. Most light cars perform better with a 2400 RPM converter as. For transmission to lockup, however, some requirements follow. If you hold throttle open with your foot after a few minutes the rpms will speed up and it will idle normally. You see, when I accelerate at a slight amount. In the front of the converter there is a disc clutch that is turned on at higher speeds to give a mechanical lock between the crankshaft and trans. 7 non MDS seems like its torque converter is always locking and unlocking. - Make sure pump clearances are perfect. Just wanted to see if its a common problem with this vehicle. I believe the original appender has confused "torque converter lockup" with "high gear lockup" which many modern automatics will do. The engine RPMs usually drops 100-150 RPM. However, vibration problems can happen when these torque converters go bad. I had a gent call me yesterday with this problem and he's replace both batteries, alternator and the APPS sensor. There are basically three ways a torque converter lockup clutch can fail: It can stay locked up, stalling the engine when the car is braked to a stop; it can never lock up, which shows up as an increase in fuel consumption and radiator temperature; or it can slip when engaged, allowing engine speed surges at a constant. The result is either a delayed (momentary low engine rpm) or no lock-up pressure release. A lock up clutch is engaged as soon as the engine and the transmission run at the same speed approximately. A Bruno’s Automotive lock-up converter drive unit. The TC will lockup as slow as 36 MPH or until the speed reaches the throttle position it's set at. For instance, this component can remain locked up . You can feel the torque converter locking and unlockin and watch the RPMs jump up and down, plus feel it. Happened to me with a 92 Accord EX. The sign and cause and how to fix the torque converter is our point of discussion. I have a built trans but its not massively built. took of the inspection plate and it was even louder. 2014 Ram Truck 1500 Sport 4x4 5. C4 Tech/Performance - Torque converter lock up / break switch? - I've been having this problem since having my new trans installed . With both problems I've hooked up my EZ-Scan 6000 while these. The converter lockup is just like a clutch and if it stays locked it will feel like stopping a manual car without disengaging the clutch. Depending on throttle, the TC will lock up anywhere for 1200 -1500 RPM. It's the sweet spot tuners know will get that car down the track with consistent HP, and the best ET's. Shift through the transmission modes several times with the vehicle stationary and the engine idling. a Brief History of tHe torqUe Converter ClUtCH In the late 1970’s, various government agencies began mandating increased fuel efficiency and decreased tailpipe emissions from auto makers. The pump of the torque converter is made up of small fins that make the connection to the flywheel possible. Another member on here has had the same problem as me and replaced it with a different. In this edition of Fun with Transmissions, we’re going to check out the guts of the. REBORN 20 Over on 3/2/11- Pics in gallery- 2000 F250, Auto, 38r, Full Force 238cc/100. It serves several purposes, such as giving an engine the ability to idle as well as increasing an engine's torque. sounds like it may be a torque converter lockup solenoid issue. Also on the freeway the rpms are higher at 70 than before. Modeling Torque Converter Characteristics in Automatic Drivelines. I beleive if your TC was locking up, you would stall. So--since before I had to do the whole engine rebuild thing, I've noticed that I can always feel when the torque converter locks. Like alot of places blame the torque converter on the trans goin bad. Prior to removing from car I pulled the pan so I could make sure the TV. I noticed it during a long trip doing 70-80 mph. It turned out to be the warn tcc bore leaking fluid by, it would basically lock and unlock a billion times (the shudder) at those exact speeds and during lock-up. It means that the Cherokee's computer has detected that there is an issue with the torque converter clutch (TCC) solenoid circuit. The TPS (Throttle Position Sensor) on the IP voltage should be set at. If your converter is a lock up unit (many actually aren't), at a certain RPM in top gear the torque converter will lock up thanks to this friction surface, and the torque converter can no longer slip. Still present in latest update. It only locked up 4 times on my 20 mile trip to work this morning but would kick back out of lock up real quick. The valve gets stuck open and when shifting from either park or neutral it doesn't send a signal to computer to bump up idle so the vehicle stalls. I just put a rebuilt 700R4 transmission in my 1991 GMC K2500 with a 6. Understanding and Troubleshooting Torque Converters. The primary function of the TCC Solenoid is to lock up the torque converter when an engine's RPMs exceed a certain level. The clutch locks up for a brief moment and then slips, or breaks away, because it could not hold enough torque to complete the lock up. (193,500+ HARD miles) Reading the operation of the 46RE, I found out there is an Overdrive/Convertor Lock-Up Solenoid on the valve body. Torque Converters locking up and gears being jammed in 2 nd and 3 rd are common on certain year models. i thought my truck was sounding a little wierd, so i crawled under and noticed the noise. Hello, I've got a 2001 Malibu with 2 problems. Keep an ear open for any lurching, clicking, or whirring sounds, which will all indicate an issue with the converter. Should lock between 40 to 50 mph when in 4th light throttle. The lockup clutch has many purposes and is part of the transmission. Keep reading to find out these common torque converter problems Most Torque Converters today also use a friction clutch to lock up the . The third TPS was great for the first 100 miles, read 13. The stator is called the middleman. Turn on the ignition and the tester should light. They use a stock GM core and will put the stall whereever you want. The torque converter in my "T" seems to have no stall. Ever hear of a high stall converter? They work just like a prop does, when you apply a different pitch to it. Does anyone know if it is possible to monitor when the auto torque converter is locked up? Guess there should be a signal to or from gearbox . A common problem for many General Motors cars is when the Torque Converter Clutch (otherwise known as TCC) fails to release. Another potential transmission-related cause of car stall is low transmission fluid levels. Note: some transmissions, like the 125C, must shift to third gear before the tester will light. There is a stuck torque converter control valve. This fluid then enters the next part of the torque converter: the. When the clutch engages, it allows the converter to “lock” the engine to the transmission input shaft, providing a direct 1:1 engagement between the engine and transmission. Common torque converter problems can take many forms, and diagnosing the cause of a wonky automatic transmission is fraught with complexity. Unhooked the 12v+ signal to the Transmission and no change. A judder from the torque converter lock-up clutch may be felt while driving between 20 and 60 mph. As engine rpm increases, the flyweights push against. Late model cars use electronic controlled lock up converters, that eliminate the inherent slip in the converter. Once it returns to its idle state, press the brake pedal all the way and shift into drive. If you feel like you need a looser converter I have a brand new 2500 stall for a 200-4r. It's referred to as Modulated Converter Clutch (MCC). The torque converter consists of a fluid coupling with an impeller, a turbine and a stator. Correct me if I'm wrong, when driving on the road, the torque converter is suppose to lock-up generally in 4th gear, correct? Now, when you slow . At idle, that can be 100%; at full power, it probably drops to 20% or so, although the slip rpm is the same or slightly greater. If choosing a torque converter for use in a street car, you might want to select a torque converter with a stall speed that is below the engine RPM at 70 mph, since this is where your engine will spend a lot of its time. 2017 Edge codes came on for torque converter not locking up took it to the dealership ( green Ford of gainesville GA. However, when I'm cruising along and the TC locks up and then I come to a stop the converter tries to stay locked until it stalls and then unlocks. I've got a for sure way to diagnose torque converter lock up issues where it lock and unlocks at about 45-50 MPH. The lock up clutch in the converter is way too small/weak for our heavy suvs So when the converter clutch goes bad it blows all that shit thru a perfectly good transmission I did the PATC converter. Any help would be greatly appreciated. Every 4 speed auto locks the torque converter every time it goes into 3rd gear. You don’t want to have to floor your gas pedal and wait a few seconds for your vehicle to move. 4 New member Joined Dec 6, 2013 Messages 26 Reaction score 0 Location Factoryville Pa I have an 08 F250 SCT Programmer with Innovative Diesel costume tunes. Or any other combination of switches you may want. The purpose of locking the torque converter then is to reduce the heat generated by the torque converter turning below it's stall speed. I have noticed that the when i am driving uphill the torque converter will sporadically lock and unlock until the engine rpm’s get above 1,400. If you are feeling that your idle is a bit jumpy and sometimes too low and sometimes too high, it could be a problem with the torque converter. The stator is called the middleman because it serves as the conduit that reverses transmission fluid and sends it back to a turbine impeller. Changes gears fine (if anything, a little rpm flare on the 1st to 2nd change) but the torque converter never locks up. 73 LSD, IssproEV2's, Performance 48RE Opie TransGo , Smarty Tuned BBI Injected. Erratic Engagement (Torque Converter): Erratic engagement is most often caused by the driver clutch that is mounted on the engine crankshaft. Can a torque converter cause rough idle? Rough Idle is another common symptom. Bad Torque Converter: Symptoms, Diagnosis, Repair FAQs. When the engine is running at idle, the torque converter is designed to behave like a disengaged mechanical clutch. AppleJack said: After months of trying to find an engine hesitation I have brought the car to a Lexus dealer where their master tech indicated it's not the engine at all. It did not seem to be related to going uphill either, it seemed to occur every now and. rustydustyMemberfrom Kent Island, MDMaryland HAMBers. It's fairly easy to change but requires dropping the trans pan which is messy. Common on Gm vehicles is the TCC (Torque Converter Solenoid) can cause converter to lock up and not allow it to stay running or it could be the IAC(Idle Control Valve). If your lock up solenoid filter is dirty, it will not work either. Trying to figure out why my 200-4r decided to start locking up and stalling the motor when I put it in gear. You should see a 500 RPM drop when it locks up in OD. It is a 10 inch but the lockup only lowers the rpm about 100 rpm. This keeps your Edge’s engine from turning at the right RPM for any given speed, which can really hurt fuel economy. Lock-up torque converters contain a torque converter clutch. Trans tuning can reduce the rpm flair on the shift though if that is what you are referring to. My engine coolant temp is showing 192-194 on my scan tool. high stall torque ratio and a high stall speed create less idle losses and. Torque Converter locking up in drive at idle. My torque converter locks up erroneously, sometimes at low speeds, going up-hills, etc and will not disengage unless I manually shift the . The torque-converter on CVT (and even most other automatics) is "locked" by the time you are 5MPH. The torque converter is working 100 percent of the time. The operation of the transmission and torque converter in the first 3 gears is identical for lock-up and non-locking torque converters. Unless pump RPM's at idle are not eough to produce full lock up. The Working Of Lock Up Torque Converters A lock up clutch is engaged as soon as the engine and the transmission run at the same speed approximately. I cant tell yah how long it took me to figure out what it was but, a member over at LS1Tech spent quite a bit of time with me helping me pinpoint what it was. P0741 Toyota - Torque Converter Clutch Solenoid Performance Possible causes - Low transmission fluid level - Dirty transmission fluid - Faulty torque converter clutch solenoid valve - Torque converter clutch solenoid valve harness or connectors - Torque converter clutch solenoid valve circuit is - 2000-2007 Toyota Corolla. My 98 Tahoe is doing the exact same thing as your's, misfire and torque converter not locking up when it should. At light throttle the transmission will shift into overdrive at 44 MPH and the torque converter will lock-up at 52 MPH. Truck fires up great, runs and shifts great, pulls hard. On occasion, usually after stop and go or city driving, transfer case locks up at idle. Now have your buddy start the engine and place into neutral. Other factors may also prevent this type converter from locking up. Torque converter hydraulic "lock-up" occurs when oil velocity in the converter is high enough to keep the impeller and turbine rotating at nearly the same speed. 8 Do all torque converters lock-up? 9 Does torque converter affect idle? 10 Is a torque converter better than a clutch?. But sometimes when starting it up it won't idle. WTF!!!!!! I can start it in gear. I have an 08 F250 SCT Programmer with Innovative Diesel costume tunes. What does it mean when a torque converter locks up? Lock-up torque converters contain a torque converter clutch. It bolts directly to the flexplate, which in turn bolts directly to the crankshaft. The 4l60e torque converter is designed to lock up primarily in 4th gear (can also be enabled to lock up in 3rd gear as well), so when it doesn't lock, it's quite noticeable. Can a worn transmission or torque converter cause a rough. 73 LSD, IssproEV2's, Performance 48RE Opie TransGo , Smarty Tuned BBI Injected Save. I really notice this when I am turning at an intersection and accelerate afterwards. The torque converter is a large donut-shaped ("toroidal") coupling between the flexplate and the transmission input shaft. In that condition, lock the torque converter. 0 and the torque converter locks up when I'm sitting at idle in the driveway and in Drive. Most of the rebuilt converters use a single disk (Ford design) for lock up. The new Ford 10-speed that comes in the 2017-up F-150s and Mustangs has a converter that falls just above small and well below large. Diameter, Powerglide, TH350, TH400, 3,200-3,500 Stall, Each. I almost replaced the torque converter while I had the engine out, but the sheer number. 8 has an issue with the transmission. Depending on your mods your stall is probably 1600-1800. Cruising on the h-way at 70, the tach reads about 3400rpms. if accelerating - a little more throttle - it remains locked. When this happens, your torque converter has a higher effective stall speed. So far I've switched out the TCC Solenoid and 4th Gear Pressure Switch. Either the converter lock-up doesn't work, hence the slip even at over 2k rpm in 6th gear. it seems to shift normal and ok above 25-30 MPH but will not idle at all in . Can a bad torque converter cause a rough idle?. Jerky shifting has been reported when changing from (P) Park to (R) Reverse and from. Knowing if the torque converter is locking up is all about “shifts. In general, the desired stall speed should be 500-700 RPM below the engine RPM at peak torque. You could pull the TC relay to eliminate a possibility. Often this issue is misdiagnosed and sometimes will end up with the transmission needing to be rebuilt. It generally occurs at part throttle and light acceleration, between 15 and 50 miles per hour, just before the shift to one of the top gears where the converter reaches "lock-up. It idles in park and neutral but as soon as I pop it into gear it loads up and dies. And also the Torque Converter doesn't always lock in which I notice by the RPM gauge. Seeing as I am on a role with posts tonight I thought I would add another. Using a manual lock up switch with a failing converter will finish it off quick. Be certain you unlock it every time you get below about 15 MPH. I have my idle set a 1050rpm and when it's cold (I don't have a choke) I have to feather it (and I have a Yank SS3200 stall). I have an E99 4x4 and just upgraded the TC to a billet, single clutch. The reason you can't feel it until lock up is because the fluid coupling masks the miss fire. A torque shudder will happen as it locks up. The transmission Oil Dipstick 9336 has indicator marks every 10mm. I installed and adjusted a new FIPL, and I have it set a little high, so it goes into 3rd about 35mph, and 4th about 43mph or so, instead of 30mph and 40mph, respectively. what are the conditions that need to be present for the converter to lock up? it. Damage to the torque converter can undermine its power-transmitting capabilities. A camshaft with specifications of less than 220 degrees duration (which most vehicles have) means you won’t need a torque converter with more than a 2400 RPM stall speed. Attempted all the different wiring issues (adding ground, tinfoil etc. A non-lock-up torque converter will add more heat. It is best to unlock the converter under moderate to hard acceleration. When I am at a stop my jeeps pull hard like on the gas. It only locks in the high gear - which is 4th on a 700-R4, a. Your best bet is to replace it very soon. The issue was that after 10-15 minutes of highway driving the torque converter would remain partially or fully locked. Lock the torque converter at the top of the grade, and unlock it when you get down the mountain. A regular converter in an automatic transmission is made to slip at idle so that the . I had my 700r4 rebuilt last year by a good friend and installed a new 3200 lockup torque converter that is not good. If it persists, look to the engine or tranny internals. Note if the sounds occur as you shift through all the gears, one after the other, including the reverse gear. You'd likely experience convert lock up and unlock, a lot, during a trip. If the TCC solenoid is sticking causing the engine to stall at idle, you might try this. Torque converters can unlock due to acceleration, deceleration, or slow speeds. TORCO 4L60E 4L65E 300mm 1998-up 2200-2500 high stall Torque Converter - LS engine 4. A lock-up clutch is added to the torque converter model to improve the efficiency of the powertrain in higher gear ratios, and its effect on the vehicle . Try using seafoam or BG44K to clean out some carbon buildup too, def should help with surging. Torque converter clutch failure will occur when it becomes jammed from locking up due to distortion, or if they burn from high heat. Wait for a few minutes for the engine to warm up, then gently press the accelerator twice and rev up the engine. I have the same problem when driving in the. it locks whenever the computer tells it too, and whenever the lockup conditions exist. anytime? i understand that doing the high idle mode that the orange wire used for the high idle is also used to lock up the t. This is why an engine can idle when your car's. He said it's the lock-up mechnism on the torque converter when I accelerate lightly at highway speeds. " Since it is temperature-related, it tends to happen on hot days, after idling in traffic for long periods of time. From what I have read, it should lock in at a minimum speed of about 45 mph. Torque converters use a lock up clutch to create a true 1:1 connection between the engine and the wheels. The torque converter’s stall speed should be rated about 500 to 750 RPMs below your engine’s max torque RPM. The devs should do it like this: in most transmissions in real life, it will lock the torque converter if it is sustaining a speed above usually 42-46 MPH, usually in 4th gear (OD) but sometimes on a hill it could lock up. With a high stall convertor it will probably idle even high because there will be less of a load on the engine, more like it idles in. From the huge, bolt-together cast iron powerglide converters (anyone beside me remember those?) to the small Dodge 845RE multidisc converter found behind the 3. I've had a pro torque 2800, Fti 3200 and a Fti 4000 converter and both Fti converters drove better then the pro torque. Usually it's the spin-on filter (having a weak anti-drainback diaphragm that allows . your car is shuddering: a faulty torque converter can cause a shudder just before or after it locks up at cruising speed. I removed the Backup fuse and did. Engine idle is set too high; Kart Moves While Engine Is Idling (Torque Converter): Drive belt installed wrong (30 Series only, flat side of belt should be towards the engine) Wrong drive belt installed (a belt that is too short will cause the machine to "creep" at idle) Malfunctioning driver pulley (on crankshaft). Firestone Destination A/T P265/75-16. 01 VDC at idle will give a little harder shift. No torque converter lockup when cold?. Is there anything I could do get it to lock up? Car runs smooth from idle to WOT. There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. Place the tip of your test light on the other side of the fuse and the tester should again light. The transmission (th350) and torque converter appear to be new. Faulty Torque Converter Clutch Solenoid. A restricted or clogged transmission filter makes the same whining noise as a faulty transmission pump. I’ve had good luck unsticking TCC solenoids using the. a Brief History of tHe torqUe Converter ClUtCH In the late 1970's, various government agencies began mandating increased fuel efficiency and decreased tailpipe emissions from auto makers. When it doesn’t lock however, RPMs will keep climbing in 4th gear. Why is this desirable? Fuel economy. Going to check my wiring on the tc lock switch next I think. For balancing reasons, the bolt pattern between the torque converter and the flexplate often-but not always-allows only one orientation of. If the torque converter is binding up or the lockup is faulty, the engine can slow down a few RPMs. The torque converter housing is mechanically attached to the engine's crankshaft causing the pump to operate whenever the engine is running. The torque converter is one of the numerous car problems that car owners often experience. Most stock converters do have a marginal load at idle and is different for every vehicle depending on what the engineer specified. On my V6 Camry the solenoid is located on top of the valve body inside the transmission, so you would have to drop the pan and remove the valve body to. car works fine 90% of the time. When the engine temp reaches 180, the truck locks up the torque converter. Torque Converter Lock-Up ('01-'02) Jump to Latest Follow He just unhooks the battery for a while, starts the car, letting it idle for a while and then takes it on a nice gentle mixed loop drive, (some stop and go and some cruising) and its back to normal again. What will an out of balance torque converter feel like?. My torque converter locks up fine, but it continuously unlocks it and then locks it. It's the sweet spot tuners know will get that car down the track with consistent HP, and the best ET’s. Torque converter locked at idle??. stop at a light and the truck will lug down to 400rpms converter is locked up when i shift from drive to neutral it will rev up to 2000rpms TC is going bad. 888tbone888 said: My 2008 dodge ram 1500 5. The torque converter shudder is a brief shake in the vehicle whenever the internal clutches apply inside of the torque converter. You need to disconnect the lock up switch when coming to a stop. Trans temp has to be some what warm also. I'm almost certain I'm due for a tc since I found some metal flakes in the. can a bad torque converter cause rough idle? 9. I have 32" tires and 3:07 gears. 3 out of 5 stars 92 1 offer from $219. I just had my 700R4 rebuilt and a low stall torque converter installed. 1997 F-250HD Extended Cab 4x4 7. I'm 99% sure that on a 5R110, if you manually lock the converter the trans goes into limp mode and there is no way around that. With oil in it it's due for replacement anyways so start there. Do you even know what the word cavitation means? Your torque converter is not locking up or cavitating! 1. If the torque converter is faulty you can get a lot of different pressures inside of it, which will cause rough idle. This is most often felt at low speeds and can lead to vehicle stalling. I am having trouble when the truck is in gear at idle the torque converter is locking in and stalling out the truck. I need to change out the gears but I am real worried what it would be like with lower gears. If the TC is not locking up, the idle in neutral isn't affected, and it won't lunge forward when you put it in gear. A torque converter transmits torque hydrolically using automatic transmission fluid. The ICP sensor can cause surge but is unlikely to make the TC lockup. Torque converter shudder fells like a slight to heavy vibration in the transmission, and is usually accompanied by an interruption in power transfer. A solenoid that is sticking on will/can cause jerky shifts and when coming to a stop if it fails to unlock can stall the engine, about the same as not pushing in the clutch on a manual. There have been numerous reports of the Ford Ranger T6 3. It has 112,000 miles and is pretty much all stock. Lockup torque converters became popular when automakers were stuck . 2011 chevy traverse torque converter. It did not seem to be related to going uphill either, it seemed to occur every now and then, about every 1 min. The torque converter problem in simple terms can be described as a lock-up. As the accelerator is pressed the RPM's raise and the torque converter will start to lockup or engage. Torque Converter not locking. Just curious if anyone else has had this same issue. Your only option is to have it custom tuned to lock the converter at whatever point you decide. The torque converter is basically out of the. American Honda investigated the judder and found that the torque converter was not causing the judder and the transmission is not damaged by this judder. Think of it as a balancing act. A problem with a tuner can cause this. So can low trans fluid, internal pressure leaks, a worn pump, or a damaged internal filter. 3 to 18%, I freaking HATE PARTS STORE CRAP!!! Torque converter will only unlock sometimes. The torque converter clutch is also known as a lock up converter. When a torque converter stays locked up, and you stop the. The pinkish friction surface you see here is the torque converter's lock up clutch on the back of the turbine. More modern transmissions lockup the torque converter sooner, and keep it locked under conditions that the 4L60E would unlock. 2 diesel and the torque converter won't lock up. At some point the difference between the stall speed get so great that it will rip the friction material off of the face of the clutch inside the locking converter when racing (I've done this twice) requiring a replacement torque converter. The torque converter is made up of five parts: 1. Discussion Starter · #1 · Mar 12, 2014. Torque Converter Lockup: the point at which the converter in an automatic transmission is the most efficiently providing the most Horsepower (HP) . Torque converters can lock up for a variety of reasons. 12 Valve Engine and Drivetrain - Torque converter stays locked up - My what is happening to let you know it is locked up when idling and . Place the tip of your test light on one side of the fuse and the tester should light. TCI 10" Streetfighter Torque Converter 2008-09 Chrysler A580 Hemi Challenger. While the engine was running at idle I unplugged the line and felt for vacuum, . If it totally locks up, it isn't likely to cause a rough . Limp mode is second gear, IIRC low / reverse accumulator circuit is what's also used to lock up torque converter. Damaged torque converter clutches — Just like with manual transmissions, automatics have clutches too although they are located throughout the transmission as well as part of the torque converter assembly. what happens if torque converter stall is too low? What Happens When Torque Converter Locks Up?. “Shifts” are the key to determining whether or not the torque converter is locking up. that shake or "runout" can f up the whole front pump assembly. Discussion Starter · #1 · Mar 24, 2012 hey guys I beleave my torque converter in my 350c is staying locked up when I come down to an idle, I have to set the idle at 1300 rpm in order for it to stay running at 700rpm in drive, any suggestions? Save Reply Crosley Administrator Joined Nov 14, 2002 10,104 Posts #2 · Mar 24, 2012 What vehicle?. That is to say, converters do lock up and unlock automatically. However, knowing just where that point is can be a challenge. My torque converter is making a clanking or rattling noise at idle. On the way to work this morning i came to a stop and the car jerked a couple of times. Once it locks up you have a direct lock between the engine and transmission. I recently had a code 21 (TPS voltage to high) so i changed the TPS and got rid of the code hoping that it would solve my the problem with my torque converter not locking up but it hasn't. IDK, it could be solenoid or valve body problem but personally, I'd check wiring first (it could be shortig something out when it activates the solenoid pack). At low speeds, the engine turbine's fluid simply passes through the transmission's turbine without moving it, constantly recycling back through the drive turbine. Advantages Of A Torque Converter Clutch Solenoid. The torque converter keeps the vehicle from stalling when coming to a stop. I will be going about 25-30 at about 1500 rpm and the torque converter will lock up and shutter. First start off by disconnecting the transmission cooler line at the radiator on the driver's side. With the engine ideling at so high of an RPM the torque converter is locking up (bypassing the built in stall speed) and putting more load on the engine. Google on "Torque Converter Shudder" and read about it. A lock-up control system is described for an automatic transmission including a torque converter coupled with the output portion on an engine, and a power transmitting gear arrangement coupled with the output portion of the torque converter and controlled to vary the transmitting gear ratio therein by gear ratio control means in accordance with a shifting up or down command supplied. Why would you want a lockup converter? Really, it comes down to fuel economy. When I let off the brake it will idle up to almost 20 mph. kinda looks like the converter is wobbling back and fourth a little. If I hit the gas when slowing down it will unlock and stay unlocked. The torque converter is like a clutch, it is not locking up, or your truck would stall instantly. - Reduce unnecessary internal leaks that waste pump volume. When a converter locks, it lowers the RPMs and usually feels like going into another gear. It dosn't take much to kill one. Is it possible to tap that wire and use it while driving? i would only use it in 5th gear to keep the t. I noticed this when I had the test light attached. If I touch the gas pedal a little, the tach jumps around. When the ECM signal stops, the solenoid closes the valve. A lock-up control system is described for an automatic transmission including a torque converter coupled with the output portion on an . The TC lockup being caused by a stuck solenoid is likely. You’d likely experience convert lock up and unlock, a lot, during a trip. This is real bad in 4lo in reverse. The speed at which a lockup mechanism automatically activates is about 64 kph. If you have a modified engine with a long duration camshaft it is going to have a fast idle no matter what you do. Connect the other end to terminal F at the ALDL. But I'm not sure if that's the culprit yet. The problem is typically diagnosed as a bad torque converter. Honda Civic / Del Sol (1992 - 2000) - Torque Converter Lock Up? - Honda started throwing a P0740 Lock up and P0700 code at the same time bout a month ago, . This ensures a margin for application for the torque converter to take off. help with torque converter locking and unlocking problems. 7 how delicate I try to throttle the gas pedal while in neutral to hold a steady idle it fluctuates lol it either revs up or down I cant seem to hold a steady idle. The new Ford 10-speed that comes in the 2017-up F-150s and Mustangs has a converter that falls […]. stop at a light and the truck will lug down to 400rpms converter is locked up when i shift from drive to neutral it will rev up to 2000rpms. Jump to Latest Follow It doesn't seem as if the t/c is locking up all the time. Traditional automatics and most continuously variable transmissions rely on a fluid coupling device called a torque converter. MY torque converter would always stay locked when coming to a stop after lockup. >>Learn what causes a torque converter to fail. It will help with compression braking when going downhill, when going uphill (or just on the gas) you want it to unlock so the convertor can slip and you get about a 2:1 reduction out of the slip. The truck went to the dealer for diagnostic . Lockup torque converters were added to many newer-model vehicles to help with fuel economy. There is a stuck torque converter control solenoid. P0740 is one of the most common transmission trouble codes. 2011 Ram 1500 Outdoorsman, quad cab, 4x4, Hemi. I've replaced fuel pump, new mpfi spider upgrade, acdelco plugs, wires and cap and rotor. The lock-up is gradual but you will be able to feel a "shift" when the lock-up engages. The black solenoid on the right side of the unit is for activating the transbrake. After installing a pwm eliminator kit which is fairly simple pull the negative battery cable off the battery and turn the key over to clear the computer. Most "street tuned" engines won't idle high enough to have a problem with the torque converter. Rough Idle is another common symptom. Any sort of rough idle or smoke after prolonged idle? If yes, your valve stem seals need to be redone, plus a carbon cleaning to remove all the carbon left from oil burning. Usually the torque converter lockup solenoid is at fault in your condition. I think the ECM does not even attempt to lock the torque converter when you have this code, so if you have an older car that you just need to get you around it probably isn't worth fixing. TC slip will usually set a code. They also serve to pump the transmission fluids to the outside of the mechanism. It won't do this at lower speeds so your Sable can take advantage of the torque multiplication that a torque converter provides. Just thought I'd try and throw out a different idea, I hope you get it figured. I have been using OBDeleven and when I scanned my car I found a P1811 code . A mile or so after the torque converter starts being able to lock up, it starts shaking HARD whenever it locks it up. The TCM (transmission control module) can duty cycle the torque converter lock-up solenoid to achieve a smooth application of the torque converter clutch. Torque Converter Shudder Problems. Where the converter mounts to the flex plate. For starters, the torque converter costs between $150 to $350. 5% throttle, and was very inconsistent. ok question here, on torque converter lock ups, is it better to have it lock in a certain speed at wot,, or leave it unlock at wot? notice that leaving it unlock rpms stay high when shifting thinking it might be better. I have to set the idle at 1300 rpm in park in order for it to idle at 700rpm in drive, and it feels like it still want to move when at a stop light, its a very mild motor should be able to idle 900 in park 650 in drive no problem, I just ordered a 2200 stall converter plan on installing it this week hopefully thats my problem. If the engine is dying when coming to a stop or when putting the trans in gear then I suspect your torque converter clutch is locking up, which is usually caused by a failure in the converter itself. It may intermittently do the above then work right, but, in the end the TC is toast. So, we're going to give everyone a road map to finding that right point. you might feel the car shudder while driving about 30 to 45 mph. This is at 25mph under normal acceleration when the transmission is warm. This solenoid usually locks up the torque convertor (which acts like a clutch in an automatic transmission) when you are driving at a certain speed, and unlocks it when you press the brake, and/or come to a stop. 1 Answer High Idle and Torque Converter wont lock in all the time Hello, I've got a 2001 Malibu with 2 problems. Figure 3 shows this relation for a stalled converter. Over the years, torque converters have come in many shapes and sizes. Actually the issue is likely caused by a defective filter. It will be like a truck with a 5 speed and stopping without using the clutch. in 4 low, you want it off when you're on the gas, one when you're on the brake. Trans fluid level is normal, not cloudy and does not smell burned. Don't have a lot of knowledge about torque converters. If your thermostat is slightly open and the engine doesn't reach its normal running temperature the torque converter will not lock up. And I'm afraid I'm gonna smoke the tranny, with it being so worn. I would get a Mopar tcm or a Hemituner modified tcm with the converter so it will lock up in 2nd. If the tester lights, you have 12 volts to terminal A at the transmission. 3 basically gets the Corvette converter which, behind a 350, would stall around 2200. Overdrive unit locked out - when an automatic overdrive is " locked -out" the torque converter lockup feature will also be locked out. Slippage could be due to low pressure (restricted filter/bad pump) or worn or detached lining (moisture will dissolve the glue),detached lining/apply piston will also cause vibration. A faulty torque converter clutch can also cause other symptoms such as slipping and rough acceleration. A solenoid in the transmission engages torque converter lock-up. This style of converter is also used with the GM version of this 10-speed design, called the 10L90. The lock-up clutch (6), also known as the torque converter clutch (TCC), . 3 Diesel, Torque Converter Clutch (TCC) not locking, OD light flashing, only code present is P0741. I'm not sure but when my last trucks tc went it started shuddering uncontrollably while in gear from idle all the way til full throttle. When shopping for a torque converter and. 3" Down Pipe to 4" Exhaust (Stainless) ~ Tymar Intake ~ TS 6 Position Chip ~ HPOP Cross Over Line ~ Regulated Return ~ E-Fuel System ~ Intercooled ~ CCV Mod. 4L60E torque converter lockup. So I'm here, BEGGING for some 2nd Gen, or just Transmission Gods assistance. Stayed locked up tonight all the time. In answer to you question of if the transmission or torque converter is the cause of your rough idle, no it wouldn't be the cause but it will magnify the problem, when you put the car in gear. How To Test a Torque Converter. hey guys I beleave my torque converter in my 350c is staying locked up when I come down to an idle, I have to set the idle at 1300 rpm in . Torque Converter locking up too early. It also prolongs the life of the converter. like 30 degrees my auto will not lock up the torque converter at do a "cold warmup sequence" in all temperatures (like high idle). Torque Converter Lockup: the point at which the converter in an automatic transmission is the most efficiently providing the most Horsepower (HP) and Torque. In gear at idle if the TCC applies the car will try to move just like letting the clutch out on a stick trans at idle. My problem: When I shift into gear it stalls out. If somehow the TCC was engaging while at idle in gear the car should lurch forward against the brakes (you do have the parking brake set dont you!!) and die. Torque converter hydraulic “lock-up” occurs when oil velocity in the . Started out as an intermittent problem and gradually got worse. The torque converter was a diesal 1100 stall model. Torque Converter Basics: How To Choose Correctly?. It's why a worn or faulty pump makes a whining noise in all gears, including park and neutral. If the vib starts right after the torque converter lock up clutch engages then your lock up clutch could be wasted. Provided everything in the trans is built correctly you shouldnt have TCC (torque conv clutch) lock up capabilities in 1st gear which is what the trans should be in when at a stand still. Most lockup torque converters do not have a clutch designed to lock up when higher power is being applied. Purchase a can of SeaFoam TransTune and add a half a can to the transmission fluid. On a regular basis (but not every time), when starting from a stop it feels like the torque converter wants to lock when I get to about 1500 RPM. Also it will act up after driving for a while and torque converter will lock up and transmission shifts hard. And as soon as the stator starts to spin, however, torque multiplication is lost and the converter locks up. So when I'm going REALLY slow, like when I'm in a traffic jam and I just let the car move at idle without pushing on the gas, . I'm positive my tc in my new truck is goin out now too, when i first. MCC can occur at various times depending on shift lever position, current gear range, transmission fluid temperature, engine coolant. It doesn't do it on a regular basis, so i'm sure the dealership will shrug it off when they look at it today. Hello, I am a new member here and I have a 2000 Passat GLX v6. When I get it back on the freeway, temp comes down to normal and idle stops misbehaving. In order to enhance clutch pressure and make it engage with the torque converter’s front, the solenoid is energized. Turn the ignition key and start up the engine. When the engine rpm increases, the role of a torque converter is to transmit. Torque Converter Choice Can Enhance Or Impede Performance. I think that it a torque converter with a broken spring but not too sure. I have a strange issue, my torque converter has been locking up very early, at about 25mph. i had an out of balance adapter kit for my tranny once whole truck would shake especially at idle. The flyweights in the clutch are sticking or the movable sheave is binding on the hub. What does the term "Lock-Up" Torque Converter mean? Answer: This term refers to a converter that contains an internal lock-up piston or device, either friction or mechanical. Without slip it cannot transmit torque. I sell a Dacco 2500 stall that'll knock about. An exception to this theory is if the transmission/converter is equipped with a lock-up feature. Estimated to ship direct from manufacturer on 05/09/22, pending manufacturer availability. ) was informed the torque converter and fron pump would need to be replaced. The 4l60e torque converter is designed to lock up primarily in 4th gear (can also be enabled to lock up in 3rd gear as well), so when it doesn’t lock, it’s quite noticeable. Once locked up the shudder goes away. Therefore, if you are currently experiencing any of the symptoms of torque converter problems, you may need a good idea of how much it’ll cost to get it fixed or replaced. It has about a 40% larger lockup clutch in it. The only torque transfer (when not locked up) is through the oil in the converter. When I'm easy on the throttle it locks much earlier and the vibration is . With the engine ideling at so high of an RPM the torque converter is locking up (bypassing the built in stall speed) and putting more load . A torque converter is a round object between the engine and transmission of automatic vehicles. The vibration felt is known as "lockup shudder" and may occur due to a bad engine or transmission as well. So, my torque converter will lock and unlock just fine when driving However, when I'm cruising along and the TC locks up and then I come . In most cases as engine modifications cause a more radical idle, a higher stall speed converter is used to allow a little more slip at low rpm. At an idle it's pulling, and the engine bogs down when I apply the brakes, sounding like it's going to stall. Your problem sounds like an engine miss. Or the lock-up is stuck in locking position (eg via failed solenoid) - hence the immense torque at 0 speed during idle. When the vehicle is idling, the rate at which the transmission fluid pumps . How to Fix Torque Converter Problems (Signs of a bad torque. It usually happens right after shifting into high gear (1500 to 1800 RPMS) and then clears up at cruising speed. A torque converter lockup clutch may fail and there are different ways this failure can occur. Torque converter issue, maybe?. The stator, which is attached to the transmission front oil pump assembly, contains a one-way roller clutch assembly that locks the stator in place during acceleration and allows. A torque converter uses an engine-driven turbine (fan) to push fluid through a matching turbine attached to the transmission. Some will also lock in 3rd then again after it changes to 4th. It starts to surge while on the gas pedal, where it goes from idle to 1500, immediately drops back to under 1000 RPM, surges back to 1500, and the cycle. The feeling of torque converter shudder can be compared to hitting a rough spot in the road. You might notice a change in your mood if that’s the case. By blocking this valve off the computer only command an on or off command that is all. engine may want to stall whenever you attempt to shift into gear at idle. Often this issue is misdiagnosed and sometimes will end up with the transmission needing to be. Jump to Latest Follow 1 - 8 of 8 Posts. Normally a stock engine will idle just fine at 750 rpm no matter what stall convertor you have. 2015 RAM 2500 LoneStar Mega Cab CTD 2WD Air Ride PRAIRIE PEARLCOAT 02/09/2015. you notice a fluid leak: one sign your torque converter may be going bad is a transmission fluid leak. Mine feels like its slipping between 5th and 6th or around 60mph. It seems as though the torque converter is locking up when I put it in drive after backing up. 4 Dec 11, 2013 Dec 11, 2013 #1 Spickerman6. A problem with the solenoid can also be a reason why a car stalls at idle. Yes, these cars have a lock-up torque converter. To see if the lockup clutch in the TC is siezed, or just on, at idle, . if it is the torque converter be careful the front pump doesn't blow out in the tranny. Say a 44 PSI oil pressure switch for overdrive and a 52 PSI oil pressure switch for the torque converter lock-up. The major advantage of the torque converter clutch solenoid is that it allows for a smoother acceleration and deceleration process. However, knowing just where that point is can be a. When driving highway speed on a flat road my rpms are always fluctuating, Like its looking for a gear or unlocking and locking. This creates a vacuum that in turn delivers more fluid to the central part of the device. No they do not disengage, It depends on the stall speed of the converter what the load will be. Tach surges from normal to just under 1000 and tranny temp rises more than normal (goes from 140-150 to 190-195), truck wants to lurch forward when I let off the brake. Torque converter recommendations 6l80e. 2008-09 Chrysler A580 Hemi Challenger. Your car's automatic transmission has a torque converter. The locking converter acts like an added gear that you can feel the looser, or higher the stall speed is. And heat is mostly generated by the torque converter in the unlocked state. You might have heard the term "torque converter" many times. The reservoir seen at left contains pressurized oil for operation of the lock-up feature of the converter, while the solenoid activates the reservoir. You could try keeping 1 - 3rd gears unlocked to help a tiny bit with take off but your idle will still suffer. The 3 issues I am having are 1; If I start my truck and let it idle for any extended period of time (say 5 minutes or more), the transmission seems to be locked . High Idle and Torque Converter wont lock in all the time. You can tell that the rpms decrease when it locks up and increase when the torque converter unlocks. With a lock-up when you get to speed, Wait for a few minutes for the engine to warm up, then gently press the accelerator twice and rev up the engine. The transmissions have input and output pulse sensors to detect that the gear selection and lock-up is working as expected. If you are feeling that your idle is a bit jumpy and sometimes too low and sometimes too high, . All automatics with lockup converters unlock on the shift, otherwise the shift would be very harsh and hard on the tranny internals. P0740: Torque Converter Clutch Circuit Malfunction. I brought it to the dealer and told them it was the torque converter and that it is not locking up. 200-4R Converter Locked at Idle. What are the symptoms of a locked torque converter in a car?. 10-09-2019 #5 JWM_Jankowitz Tuner in Training Join Date Mar 2019 Posts 44 Hi, It does have a healthy cam ;-). Our X is not locking the torque convter at highway speeds sometimes. Lugging a car and running the engine at very low RPM's can and usually is very inefficient regarding engine vs fuel burn. You really have no idea what you are saying. mine felt like a bent drive shaft, whole drive line shakes. If the torque converter is locked in the drive or idling gear and does not release the transmission, you most likely have a problem with the converter clutch. Yes the torque converter locks up based on load(Throttle opening) and appear to alter the shift points and idle speed when the engine is . The TCC "locks" the drivetrain, which allows for a true mechanical connection between the transmission and the engine.