Question about 1993 Jeep Grand Cherokee

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1993 JEEP GRAND CHEROKEE AUTOMATIC TRANSMISSION

I HAVE A 1993 GRAND CHEROKEE, THE TRANSMISSION WANT SHIFT. yOU CAN UNPLUG THE ELECTRICAL CONNECTION ON THE TRANS AND SHIF IT BY HAND WITH THE SHIFTER AND IT WILL SHIFT. iS THERE A SENSOR THAT MAKES THE TRANS SHIFT SOMEWHERE.
THANKS DARRELL

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  • darin brown May 11, 2010

    where does the other end of conn. go

  • Cindy Jeffers
    Cindy Jeffers Sep 09, 2012

    mine is stuck in 1st gear, will not shift and kickdown does not shift it either. also service engine light comes on once I start driving.

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2 Answers

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  • Master
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I really doubt it is the TCM. If you have the A340 ****** in the vehicle here is probably the solution since you can shift it manually with the TCM disconnected. There are 3 shift solenoids in the ******. In time (many miles) they short out or malfunction. You can replace them. They are quite pricey. Go online to fine them. Google the parts as "
shift solenoids for a A340."They usually come in a set of three. One is for the 1-2 shift the other is for the 2-3 shift and the last is for the overdrive lockup.
You can test them after you remove the transmission pan by running a hot or energized wire to the shift solenoid. If you can hear it clicking when energized it is working. I have seen this time and time again. This particular ****** is also used in Toyota trucks. You can identify it by looking just above the transmission pan. You will see a factory tag about 1 inch high and 2.5 inches long on the ******. It may say ASAIN A340. This is the same ******. It will say made in Japan on it also. Again this is a very good ******. They can take a lot of abuse and this is a common problem. Replacement is easy. Undo the single bolt to the solenoid and pull it out of the hole is pushes into. Push the new one into the hole and reconnect the wiring harness. Two wires to each one. The kit for all 3 is around 260.00. Once you replace these reconnect the TCU. Of course you should change the ****** fluid since you must drain it all anyway and change the filter to the ****** and replace the pan gasket. Rotate the Torque converter to find the plug to drain the rest of the old ****** fluid from the torque converter. New fluid is required. Do not use the Dexron type 3. Replace with the the next level up. Chrysler recommends this new type fluid. Good luck.

Posted on May 20, 2012

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  • Jeep Master
  • 6,982 Answers

Likely you have a shift control module malfunction. Module is probably on the right side fender in the engine compartment. Check to see if you have one (some do and some dont... go figure...I've got a 91 & 95... I have about five different diagrams and NONE apply to my vehicles)

Posted on Dec 16, 2008

  • Ricky Lytle
    Ricky Lytle Jun 23, 2011

    I would look to the right of the gas peddle inside the jeep. That is where my (TCM) is located.

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Enter the VIN in here: http://jeep.avtograd.ru/VIN/vin_en.asp

Also cHeck this info: http://www.jeep.com/en/4x4/systems_by_vehicle/

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