4l80e Torque Converter Locking Up At Idle

August 18, 2021 Post a Comment

This is a custom built 10 Torque converter. How does a torque converter work.

4l80e Lockup Problem Performancetrucks Net Forums

Disconnect a cooler line.

4l80e torque converter locking up at idle. CaltracksBelltech drop leaves Empire drive line alum drive shaft Polished 17x9 F17x11 R ZR1s with 275s315s Syclone Tow rig. Torque converter shudder fells like a slight to heavy vibration in the transmission and is usually accompanied by an interruption in power transfer. My last diesel had some particular rules as to when the Torque Converter would and would not lock up.

Its been fitted with the Transgo HD2 shift kit with the exception of the pressure relief valve and the pump modifications and also the Sonnax 34200-14K line to lube valve. September 27th 2009 2. A rather simple test can determine whether the torque converter is failingThis is how to carry it out.

So were going to give everyone a road map to finding that right point. An explanation is available here. Troubleshooting the 4L80E Automatic Transmission Page 3 DESCRIPTION Oil pressure is supplied by a gear-type oil pump.

I have been driving around fine tuning my transmission settings trying to maximize gas mileage and I am just convinced that the converter unlocking everytime I let off the gas is killing the mileage. JS UCALCA QA1 coil overs Rear. Testing for Bad Torque Converters.

There are several clutches in a torque converter. Wait for a few minutes for the engine to warm up then gently press the accelerator twice and rev up the engine. Once it returns to its idle state press the.

Just curious if anyone else has had this same issue. I have an 08 F250 SCT Programmer with Diesel costume tunes. The converter locks up great and holds fine till I let off.

There is a solenoid in your GM converter that causes the the torque convertor clutch TCC to engage and disengage. When the TCC solenoid receives a signal from the engine control module ECM it opens a passage in the valve body and hydraulic fluid applies the TCC. I have a built trans but its not massively built.

10 lock-up Torque Converters by FTI Performance - The Best Drag Racers are Racing with Unbeatable FTI Performance Reliability. I had it scanned at a trannie shop but shows no codes. A torque converter is a fluid based device which transfers energy from the engine to the transmission.

4L80E trans wTCI PCM Front. However knowing just where that point is can be a challenge. Hooked an oscilliscope up to it and can see rpms moving like torque converter is locking unlocking but voltage that controls torque converter isnt changing.

It slips in and out while on the highway. There can be many different causes for certain engine problems. When the ECM signal stops the solenoid closes the valve and pressure is vented causing the TCC to disengage.

The torque converter should Lock-up. For improved efficiency many manufacturers are providing locking torque converters. I have a 4l80E and having trouble with the converter not staying locked up while at cruising speeds 70 to 80 mph.

Brutal shifting 4L80 and now TCC locked up again Having got all my gears workingThe 4L80E in my car shifts way too hard. I am having trouble when the truck is in gear at idle the torque converter is locking in and stalling out the truck. Its the sweet spot tuners know will get that car down the track with consistent HP and the best ETs.

I know some people are using a reversing relay to run the 80e on a 4L60e program and that is the. Its in a 2002 chevy silverado 2500hd. 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.

Oil pressure is regulated by a pressure con-trol solenoid and shift points are controlled by shift solenoids via the transmission control module TCM operation. Guys I have a 98 Suburban K2500 with 4L80e in it. Checking Cooler Line Pressure or Surge Check cooler line pressure or surge.

Possible easy fix 4L80e converter unlock. This afternoon hes going to try a test light cause hes never seen hydraulics cause this type of issue but hes not thinking it has to be a hydraulic issue. Torque Converter Seems to lock up at idle OK I am hoping someone can help me.

4L80e converter lockup fix when letting off throttle. A faulty torque converter clutch can also cause other symptoms such as slipping and rough acceleration. 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.

Unless otherwise modified it is not engaged in the manner you suggest. The torque converter clutch apply and release is controlled by a. Turn the ignition key and start up the engine.

View Profile View Forum Posts Joe Moderator Join Date Apr 2003 Posts 28110. Torque Converter locking up in drive at idle. They are wanting to rebuild it.

Installed a switch to lock-up my torque Converter from 2nd gear up. Please fill out our online build sheet HERE upon check out of purchasing your FTI Torque Converter. Logic says that as the load INCREASES on the torque converter and tranny going uphill thats when the TCC would unlock to give the engine some more RPM like it does on my 94 C2500 65 when I have a full load in the bed and am grossing 10K vehicle weight but my 94 doesnt do the unlock-lock thing going downhill regardless of the vehicle load NOT when the engine load lightens going.

The point at which the converter in an automatic transmission is the most efficiently providing the most Horsepower HP and Torque. If Im at 55mph it stays locked. Whether the TC locks up or not follow the troubleshooting tree to the next step cooler line surge test.

Installed a switch to lock-up my torque Converter from 2nd gear up. The torque converter is a part of the transmission and you will notice that the engine will hesitate and be underpowered when it is locked up. All the shifting is fine what would cause this.

However if you believe that the torque converter is locked up here are some troubleshooting tips to make sure.

I F King Hate Transmission 4l80e Swap Converter Locking Up In Reverse And Drive Performancetrucks Net Forums