Question about 1996 Jeep Grand Cherokee

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Eng. dies while driving and starts running again

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Crank position sensor.If it's a 4.0 its on the bellhousing flange at the back of the block right where block meets trans.It senses the cranks rotation to fire plugs and other stuff.If it goes open when hot or from vibrational fatigue (don't let anyone B.S. you they go bad ALOT!) engine management thinks the engine has stopped and shuts everything down,when engine shuts down the absense of vibration complete it's circuit again and it continues running till it gets in the mood again.Had one of these that made a 250mi.trip then dies and would restart after about 5 min

Posted on Feb 25, 2009

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Two guesses: a bit of water in the fuel tank, a faulty tps, or a loose connection somewhere...oops! thats three! Otherwise, I'd need more specifics and you would have to check codes etc!

Posted on Feb 24, 2009

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GM said the sensor by the oil filter on a 1997 achevia is a crank sensor you its a oil presser sw. and it is linked to Ign sw. how , will the eng die in a second if the wires are broken or the sensor


the oil pressure sensor tells the ECM when there is insufficient oil pressure to safely run the engine
when you start an engine there is oil covering the pump inlet and the pressure buils up
if there is insufficient oil to maintain pressure ,or the pump cannot maintain a low preset pressure , the ecm will shut the engine down to protect it
like wise if the wiring is loose /faulty the signal from the sensor is interrupted and that tells the ecm to shut the engine down
again if the sensor is faulty , the ecm will shut the engine down
how to fix :-
install a mechanical oil gauge in the system and check for oil pressure achieved
replace the sensor switch with a known good one
run the fault codes

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94 4.0 dies while driving will start after sitting a while


Sorry to say someone will have to have tools ready to check it the next time it quits running.
Could be a relay, the ignition module, the coil, or anything else that can get hot and stop working.

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my e-mail is mqur1963@aol.com

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While driving the car just stops running the enging dies and after 30 minuts starts again. am thiking is the fuel filter how do I change that or check if thats the problem.


if you haven't change the filter it is a good idea, but i don't think it's the problem. see if you have spark when the car dies.or spray carb cleaner in to the intake. remember the cleaner is flamable, and if you have a plastic manifold close the hood to the first click. if the car starts then dies check fuel pressure. you will need a guage their cheap enough. remember it is a machine and machines feel no pain. a;ways take precautions

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Jeep chocks, stalls, rpms shoot up n down n dies


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1 Answer

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Check the roll over protection switch. Make certain that the connection is good and not corroded.
RPM Northwest

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