Question about Jeep Grand Cherokee

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Hello, i have a grand cherokee 2.7 crd 2002.When i stopped at a red light, the car didn't move again. i get it to a jeep dealer and change me an electronic placet into the transmission. it worked properly for 18 klm and then stopped again. The fault that it saw was 1242 with some letters before this number. they told me that it is a communication problem between tcm and pcm. The next day worked properly again but the engeneers told me that i have change or rebuild the transmission.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1996 Jeep Grand Cherokee no start

I just fixed the problem with the 96.

Crank no start
No fuel pressure
No spark
No volt gauge and no fuel gauge
No scanner obd working when hooked up says error no communication. With the help of this awesome guy randy from washington, i did some relay jumping, more wire tracing and found it was the crank sensor was shorting out with just the key on. with key on, locate the crank sensor behind the valve cover, unplug it and see if everything comes back on, this is what it did for me. Thanks again randy for the help and this gentleman can be reached @ http://www.aceautomotive1.com.

Posted on Aug 25, 2008

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  • 114 Answers

SOURCE: 2002 wj jeep grand cherokee p1756

The governor pressure sensor is the most likley cause however an inspection of fluid or debris in trans pan would be a good idea to make sure there's nothing excessive in it. Attached is a list of possible causes however the senor would be the most common.

POSSIBLE CAUSES

  • Powertrain control module
  • 5 volt supply circuit open
  • Check transmission fluid level and condition
  • GOV press sensor signal circuit shorted to voltage
  • GOV press sensor signal circuit shorted to sensor ground
  • GOV press sensor signal circuit shorted to ground
  • GOV pressure sensor signal circuit open
  • Sensor ground circuit open
  • GOV press sensor signal circuit shorted to voltage inside transmission
  • 5 volt supply circuit open inside transmission
  • Intermittent governor pressure solenoid
  • Internal transmission problem
  • Oil burnt or oil pan has excessive debris
  • Other transmission DTC'S
  • GOV press sensor signal circuit shorted to sensor ground inside transmission
  • Valve body
  • GOV press sensor signal circuit shorted to ground inside transmission
  • GOV press sensor signal circuit open inside transmission
  • GOV press sensor ground circuit open inside transmission
  • Governor pressure sensor (high)

Posted on Mar 26, 2009

  • 412 Answers

SOURCE: 2002 jeep power windows and door locks stopped

SOUNDS LIKE YOU HAVE BROKEN WIRES BETWEEN DRIVER'S DOOR AND BODY AT A PILLAR..PULL RUBBER BOOT FROM BODY AND DOOR AND INSPECT WIRING HERE

Posted on Jun 21, 2009

  • 21 Answers

SOURCE: MISFIRE CYLINDER #3 CHECK ENGINE LIGHT COMES ON VEHICLE

Check spark plug wires for corrosion

Posted on Aug 27, 2009

wracefans24
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SOURCE: i have a P0702 transmision trouble diagnostic.how

Transmission Control System Electrical=P0702 code,
Have you talked to a jeep dealer yet,
Ask if there are any TSB's on this problem.
Technical Service Bulletins from Jeep when they find and solve different complaints.
What ever is doing this is a soft code,A soft code is one that will clear it's self with the cycle of the key to off then on and code goes away,But have them check history codes to see if it is there.it sounds like it is going into limp mode,this feature is when the computer sees a transmission falt it wont up shift,so you don't harm the tranny,but will let you limp to a shop to get repaired.have you ever noticed the speedometer going to 0 then this happens?
that would be the output sensor.

Posted on Nov 25, 2009

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