Question about 1998 Jeep Grand Cherokee

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My 1998 jeep grand cherokee, 4/4\r\ngoing down the

My 1998 jeep grand cherokee, 4/4 going down the road the engine dies, I pull over to the side of the road, put it in Park, turn the key off, let it set for a minute or 2 and then restart it. This does not happen every day, but on some days it happen 2 - 4 times. It always starts back up. what is my problem and
how do I fix it. Engine light does not come on.

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  • yadayada
    yadayada Jun 04, 2010

    any OBD2 fault codes?

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  • Master
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Yhe crank senser is likly to cause this if it's 4.0. The test if you can get cloe to when it does it. is to unplug the TPS and test it for voltage with the key on should be close to 5 volts now unplug the crank senser, ( just under the back edge of the intake manifold ) if the voltage changes at all the senser is bad. Or change it anyway and see what happens, High failure rate part and they do have an end of life, ( they always die sometime )

Posted on Jun 04, 2010

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  • Jeep Master
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The two most common causes fro that problem are either fuel pump or crank position sensor. If after it shuts off when the key is turned to the on position you cannot hear the fuel pump in the tank coming on, likely that's the problem. Pump won't turn the check engine light on but to complicate things, sometimes the sensor does not either. Other potential problems can be cam sensor, coil, ignition switch or a bad relay connection. To verify any sensor or computer fault, the car needs to be scanned before buying parts.

Posted on Jun 04, 2010

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  • Jeep Master
  • 22,114 Answers

I repaired one of these the other day for the same sort of problem and i checked all the obvious but the fault persisted weither it was on gas or petrol ,well i tried to repair it would be a better description but i had to admit defeat in the end and myself and the owner took it to the dealer in alicante where they changed the computer ,but it cost a small fortune and if i had known i would have found one in the scrapyard with the key and transponder and changed the lot for him .It was expensive to say the least

Posted on Jun 04, 2010

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