Question about 2001 Daewoo Leganza

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The torque converter clutch does not fully disengage

The converter does not disengage but does not stall the engine, replaced converter still same, is the solnoid a common problem and where is it located?

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Change the flex plate..

Posted on Jun 02, 2010

  • firetruker1 Jun 02, 2010

    i don't understand how the flexplate woud affect the converter engagement

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1 Answer

Transaxle clutch wont release when hot stalls engine


Replace the Torque Converter Solenoid in
the transaxle

What you have is like coming to a stop with
a manual shift & not pushing in the clutch & it stalls
the motor

The converter clutch is staying locked & your
trans is connected to the motor

Feb 14, 2013 | 1995 Buick Century

1 Answer

My 2007 dodge with 5.9 diesel is showing engine malfunction light and error code of P1740, failed TCC or overdrive solenoid. The truck seems to run ok in overdrive but I don't understand what the TCC...


Code P1740-Torque converter clutch did not lock up when the PCM sent the command. Enabling conditions: No engine or transmissions codes are present, vehicle speed was under 70 MPH, TPS was under 33% open. When the PCM commanded the torque converter to lock, no change was detected in engine speed. Blocking action: This code can block the following monitors: none.

Testing: Check torque converter solenoid for proper operation.

NUMBER: 21-11-00
GROUP: Transmissions
EFFECTIVE DATE: October 02, 2000
SUBJECT: 46RE Transmission MIL Due To DTC P1740 - TCC or OD Solenoid Performance
OVERVIEW: This bulletin involves the replacement of the transmission pressure boost valve cover plate.
MODELS: 2000 - 2001 (AB) Ram Van 2000 - 2001 (AN) Dakota 2000 - 2001 (BR/BE) Ram Truck 2000 - 2001 (DN) Durango

NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 46RE TRANSMISSION BUILT BEFORE AUGUST 01, 2000 (MDH O8O1XX).

SYMPTOM/CONDITION:
The customer may complain of a Malfunction Indicator Lamp (MIL) illumination. Upon further analysis, it is determined that the MIL is caused by Diagnostic Trouble Code (DTC) P1740 - Torque Converter Clutch (TCC) or overdrive solenoid Performance. Other than the MIL, the customer may not notice any other condition with the transmission.

This condition may be caused by an intermittent and momentary TCC disengagement condition. The transmission valve body pressure boost valve cover plate has been revised with a larger size orifice hole to address this condition.

NOTE: THE DRB III(R) MUST BE OPERATING AT RELEASE LEVEL 50.4 MDS2 SYSTEM CIS CD2067 OR HIGHER (AVAILABLE THE WEEK OF OCTOBER 2, 2000) IN ORDER TO PERFORM THE REVISED TORQUE CONVERTER CLUTCH STALL TEST. DO NOT USE EARLIER VERSION STALL TEST TO DETERMINE CONDITION OF THE TORQUE CONVERTER CLUTCH.

Here can find the test in pdf format: 2009-11-28_034958_1124.pdf

Hope helps.

Apr 28, 2011 | Dodge Ram 3500 Cars & Trucks

2 Answers

I have a Semi-Automatic 2005 BMW e46 318i. The engine randomly cuts out (stalls) when decellerating, coming to a stop, or when stopped. Other than this problem the car drives fine, and the engine starts up...


The problem you are having sounds suspiciously like the torque converter is not disengaging to allow your engine to spin freely until you are ready to accelerate.If when decelerating or coming to a stop you feel a jerking sensation similar to driving a vehicle with a manual transmission and bringing the vehicle to a stop without depressing the clutch, then the problem you are having is faulty Torque Converter Control Solenoid or a bad Torque Converter itself. If you have any other questions please contact me here. Good luck.

Mar 18, 2011 | 2005 BMW 3 Series

1 Answer

When coming to a stop the motor shuts down. to take off again you have to put it in neutral to restart. it then takes 2 or more tries to keep it going once you shift to drive.


SOUND LIKE FAULTY TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID.WHAT HAPPENING WHEN YOU COME TO A STOP.WHEN YOUR FOOT PRESS THE BRAKE PEDAL THE TRANSMISSION TORQUE CLUTCH SOLENOID SUPPOSE TO UNLOCK TORQUE CONVERTER TO KEEP FROM STALLING THE ENGINE IF NOT THATS WHAT CAUSING THE ENGINE TO STALL OUT.SO HAVE THE BRAKE LIGHT SWITCH CHECK OUT AND HAVE THE TRANSMISSION SCANNED FOR A TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID FAULT.

Jan 20, 2011 | 1992 Chevrolet Lumina APV

1 Answer

When slowing down, everything is fine, until its almost time to fully stop, then the car acts like it is going to die. if I put the car in nuetral, then stop, its fine, it only does this in drive and at a...


Are there codes in the transmission computer? Likely the torque converter clutch is not disengaging or a holding member with the transmission could not be releasing. this could be caused by a faulty shift solenoid or a mechanical failure with the transmission. Check to ensure the transmission shift properly under all conditions. Also, stall test the torque converter, put it in gear hold the brakes firm and throttle the engine. Generally the torque converter will stall out around or above 2,000 rpm. If it stalls out much lower, check the torque converter clutch solenoid for proper operation.

Again, check the transmission computer for codes. You will need an advanced OBD1 scan tool which can communicate like a hikock scan tool ( ford factory for that era)

Dec 15, 2010 | 1994 Ford Taurus

2 Answers

Lock in sensor torque converter


the torque converter doesnt have a fuse it isnt electronic

Dec 31, 2009 | 1992 Chevrolet C1500

2 Answers

Runs fine then it just stalls. Wait awhile and it runs fine then stalls again


Sounds like a crank sensor. That would be my starting point

Nov 11, 2009 | 1991 Pontiac 6000

1 Answer

1994 mazda cronos 2.00 v6 auto car idles ok drives ok but when i come to a stop it stalls in gear been atuo


This sounds like a problem with the torque converter lockup system. Usually the torque converter lockup solenoid is at fault in your condition. 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. When a torque converter stays locked up, and you stop the vehicle, it acts like a vehicle with a manual transmission, if you bring the vehicle to a complete stop without applying the clutch pedal, the brakes stall the engine. Basically, if the torque converter can't unlock, even when you come to a stop, the engine is still locked to the transmission, and even when you apply the brakes, the torque converter doesn't slip and freewheel like it should, but instead stalls the engine.

May 07, 2009 | 1994 Mazda 626

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