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Transmission torque converter lock up - Ram 3500 Dodge Cars & Trucks

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Best advice? fit a manual gearbox

Posted on Oct 18, 2013

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SOURCE: 2000 sebring transmission pan torque spec

10 ft lbs no real patterm needed

Posted on Apr 03, 2009

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SOURCE: Torque converter lock up problems

yeah i know exactly what it is its one of the transmission solenoids i beleive its called the torque converter circuit

Posted on Apr 13, 2009

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SOURCE: What are common symptoms of torque converter

common torque converter failure symptoms are: higher than normal rpms at highway speed, rpm jumping in city traffic (press accelerator and rpms spike before you really start moving), lack of pick up, sometimes a loud roaring sound depending on type of converter. as far as damaging the transmission goes... not really, if the torque converter froze up completely then yes but that is extremely rare. the converter is probably worn out which is generally just letting the crankshaft slip before the transmission can get the power

Posted on Mar 05, 2010

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SOURCE: grand prix torque converter locks up too soon

Either the speed sensor, TCC solenoid , ECU or a stuck check ball in a lockup plate. I recommend taking this to a transmission shop this could get fustrating.

Posted on Apr 05, 2010

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SOURCE: The auto transmission in my 1994 Chevy Silverado

CHECK TRANSMISSION FLUID LEVEL.TORQUE CONVERTER NEED FLUID TO LOCK UP.IF FLUID LEVEL OKAY.CHECK TRANSMISSION FUSE.IF FUSE GOOD.TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID DEFECTIVE.OR TORQUE CONVERTER CLUTCH SHIFT VALVE IN VALVE BODY STUCK-OR TORQUE CONVERTER HAS INTERNAL DAMAGE.

Posted on Jun 02, 2010

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1 Answer

Torque converter lock up problems with 350c transmission


if the transmission control module checks out
and solenoid is clicking in and out
that leaves the Torque converter itself

Oct 06, 2016 | 1980 Chevrolet Corvette

2 Answers

I have been getting the code p0740 it says something about the torque converter clutch circuit. it doesn't seem to be going into over drive. dose anyone have any suggestions I can try.


On some cars, there is a TCC solenoid in the transmission which can be replaced by removing the bottom pan. In some cars this solenoid can't be accessed without major disassembly.

Jun 04, 2015 | Cars & Trucks

1 Answer

Does a 1996 ford explorer 4.0 eddie baurer have a lock out torque converter


do you mean a Lock-up torque converter ? if so yes ford made electrically lockable torque converters since 94 ( all torque converters are hydraulic activated ,lock-up is proformed using a electric solenoid ) , but only certain transmissions made by ford had them , decode your vin number on left corner of dash to determine if you have E4od transmission or 4a400 model these have solenoid
I ask this because to my knowledge only race cars use a LOck out converter (aka "transbrake") for very high hp startss

Apr 17, 2015 | 1996 Ford Explorer

1 Answer

I have 2006 buick lacrosse they told me the auto transmission lock up and cause the motor to lock up .Is there such case


there is a thing called a torque converter between the engine and the transmission. You can sit with the transmission in drive with your foot on the brake and go no where. The reverse is also correct.
If the transmission has a major failure ( total lock up) then the engine will still turn because of the torque converter
In remote and very remote at that circumstances if the transmission locks up and jams the torque converter into one solid mass then it will lock the engine
Basically I suspect that you are being scammed for more money.

Mar 05, 2015 | Buick Cars & Trucks

1 Answer

P0740 honda odyssey


P0740 Honda - Transmission Lock-Up Control System Fault Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness is open or shorted
- Torque converter clutch solenoid valve circuit poor electrical connection

Tech notes
On some Honda vehicles the P0740 code may be set by an overheating torque converter problem which is caused by an insufficient flow to the torque converter release circuit.

P0740 Honda Description
The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lockup clutch will engage creating a 1 to 1 RPM ratio between the transmission input shaft and the rotational speed of the torque converter.
Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.

Dec 04, 2013 | 2000 Honda Accord

1 Answer

My 1997 Mercury Grand Marquis transmission location of the torque converter lock up sensor


There is no part called the lockup sensor, the lock up occurs when the Vehicle speed sensor sends a signal to the Transmission control module that the truck has reached the minimum speed and throttle angle for lock up to take place, it then activates a switch inside the transmission that locks up the torque converter clutch.

Nov 02, 2012 | Cars & Trucks

1 Answer

Starts & run when put in gear shuts off, will restart 3.8eng will not move as though the trans is locked


There is a good chance that your torque converter is locked due to a torque converter lock-up solenoid malfunction. (pretty common) The torque converter lock-up solenoid is what locks the torque converter to put the transmission into overdrive. When they malfunction, it will cause the transmission to be stuck in overdrive at all times (this is not supposed to happen until the vehicle speed gets over 45 Mph). You must remove the side cover from your transmission to replace the torque converter lock-up solenoid.
Please also be advised that many of the solenoid malfunctions - especially on older, high mileage vehicles, are caused by dirt and debris in the transmission. This debris is usually caused by wear or breakage of internal parts (like clutches or bearings) in the transmission. I would recommend also pulling the lower pan and filter off to see what kind of debris is in the pan and evaluate whether this may be caused by a more serious problem.

Nov 07, 2011 | 1997 Dodge Grand Caravan

1 Answer

1998 jeep grand cherokee 4x4. have the p0740 code. have to start from neutral, then shifts faily well. May start fluttering and making noise, have to put back to N, then to D and once again will shift. ...


P0740 JEEP - Torque Converter Clutch Circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission shift shock
- Vehicle may not shift into the highest gear

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 open or shorted

When is the code detected?
Torque Converter Clutch (TCC) unlocked for 10 sec., ECM commands converter lock-up and did not record engine speed drop.

P0740 JEEP Description
The torque converter clutch solenoid valve is activated, with the gear in D4, by the Transmission Control Module (TCM) in response to signals sent from the vehicle speed and the Engine Control Module (ECM). Lock-up piston operation will then be controlled. When the torque converter clutch solenoid valve is activated, the torque converter lockup clutch will engage creating a 1 to 1 RPM ratio between the transmission input shaft and the rotational speed of the torque converter.

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 2/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.

Mar 27, 2011 | 1998 Jeep Cherokee 4WD

2 Answers

The auto transmission in my 1994 Chevy Silverado works fine in all 4 gear but the lock up torque converter will not lock up


CHECK TRANSMISSION FLUID LEVEL.TORQUE CONVERTER NEED FLUID TO LOCK UP.IF FLUID LEVEL OKAY.CHECK TRANSMISSION FUSE.IF FUSE GOOD.TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID DEFECTIVE.OR TORQUE CONVERTER CLUTCH SHIFT VALVE IN VALVE BODY STUCK-OR TORQUE CONVERTER HAS INTERNAL DAMAGE.

Jun 02, 2010 | 1994 Chevrolet Silverado 2500

2 Answers

Yellow check engine light came on; code; P0741 refers to possible torque converter problem. car runs fine. what else could it be?


Audi code P0741 Torque Converter Clutch Circuit Performance or Stuck Off, THIS IS IN MOST CASES A STUCK TORQUE CONVERTER LOCK UP CLUTCH, U MAY NOT EVEN NOTICE THIS AS ALL GEARS WILL WORK JUST NO TORQUE CONVERTER LOCK UP, U WILL NEED TO VERIFY THE TORQUE CONVERTER CLUTCH CIRCUIT IS OK AND IF SO REPLACE THE TRANSMISSION TORQUE CONVERTER.

Jun 30, 2009 | 2001 Audi A6

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