Question about 2001 Jeep Grand Cherokee

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Have a P0740 code showing up every couple days on my 2001 Grand Cherokee LTD with 110,000 miles, but vehicle runs fine

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That code tells you that there is a problem with the transmission torque converter or the circuit that controls it. Does the rpm drop down at about 45mph or does it remain the same? Also, if you tap the brake do the rpm's go up for a moment? (that verifies it was engaged)

Posted on May 31, 2010

  • Coop555 Nov 23, 2010

    If your transmission does a power dive, the problem is mechanical. the torque converter is the very first thing mechanics look at.



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My 2000 check engine codes P1737& P0740 what they mean???

The codes are for the torque converter in the transmission.
The computer is commanding the converter to lock-up and not getting a response.
Get a couple of estimates from different shops. Maybe more.

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P0740 Torque Converter Clutch Circuit Malfunction Driving the vehicle with this problem and not attending to it asap may cause further damage. When you feel a problem and or see the engine light on, use your head wisely and have a reputable transmission shop go through a complete diagnostic procedure, in most cases this is a fluid problem, but since you serviced the trans that can be ruled out, if you haven't changed the TCC solenoid yet do so, I was unclear about what you replaced, I assume the shift solenoid's, if you have replaced the TCC solenoid then the problem is either in the wiring to the trans or inside the trans in the torque converter clutch circuit or the torque converter itself, which is a all to common failure in these Vans, if the TCC is ok replace the torque converter, that of course requires removing the trans, this job will require a lift, it is just about impossible on the ground.

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yes it may be ur computer problem

try to off it for few hours and then ON it

May 16, 2008 | 2001 Jeep Grand Cherokee

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2001 Jeep Grand Cherokee showing code P0740

first I want you disconnect the battery and Change filters and good oil transmission .and let me know .

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My 2001 Jeep Grand Cherokee has 108,000 miles. The Engine Diagnstic Indicator light came on so I took off a battery terminal for a few moments and reatached it and the light was out for about a day the...

hi this is telling you , that you have a fault code stored in the ecm, something has gone wrong with a component on your vehicle, it could be serious, or could be simple but you really should get it checked out in case you do some damage to other things, if it still runs ok, with no problems then normally its the H02 oxygen sensor either the one on the exhaust manifold or the one just past the catalytic converter under the vehicle, but you are best getting the error code read and finding out what it really is...hope this helps

Oct 03, 2010 | 2002 Jeep Grand Cherokee

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Ran a 300 mile trip up to Pennsylvania mountains this weekend. 2001 Jeep Grand Cherokee ran fine. I did notice though that while driving with ac on I got a blast of hot air. Temp gauge was at 200 to 210 no...

Doesn't sound as though you have overheating issues.
With a 196 thermostat, a vehicle is designed to run at 200 to 210,and you were putting it under a load on your trip.
I don't know why you would think about changing anything,unless you were doing some trouble shooting, and a test you were performing, indicated a failed component.
I would change the thermostat, as preventative maintainance every five years, and watch for the fans to be working after a trip of five miles or so.
Your A/C may have been switched off, by the various computer systems, to prevent overheating, or it may be starting to have it's own issues.

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1 Answer

Have p0740 code showing a few days ago in my 2001

P0740 Torque Converter Clutch Circuit Malfunction

Jul 12, 2010 | 2001 Jeep Grand Cherokee

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well i wish i could say...yes............but i built over 8000 trannys in my life and what you have is internal leakage in the clutch/drum's /packs/servo's in essense the tranny need some TLC and a major rebuild sorry

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