Question about 1997 Jeep Grand Cherokee

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1997 JEEP GRAND CHEROKEE LAREDO START THEN IMMEDIATELY STALLS

VEHICLE STARTS IN COLD WEATHER , RUNS FOR A SHORT TIME....THEN STALLS. RESTART TAKES A WHILE AND OFTEN REQUIRES PUMPING THE ACCELERATOR AND GRADUALLY THE VEHICLE WILL START. I SUSPECT A FUEL PUMP SCREEN IS PLUGGED(IN TANK) OR A WEAKENING FUEL PUMP ITSELF.

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  • Jeffrey Geyer
    Jeffrey Geyer May 03, 2013

    EXCELLENT JASON...JUST A LITTLE LATE!..THE PCM (AS I SUSPECTED FROM BEING AN EX HONDA SERVICE MANAGER), WAS NOT BAD! IT WAS THE HARNESS CONNECTIONS AT THE PCM. YOU NA=ILED IT BROTHER! TAHANK YOU. P.S. THE ORIGINAL REPAIR FACILITY "ATE" THE EBTIRE DEALER REPAIR!

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3 Answers

Check fuel pressure at the motor--with a gauge
Check fuel pump volume
Check Current --anywhere in system you choose


Pumping the pedal only works the TPS Sensor,
nothing to do with the pump for the most part

Back probe the TPS & check voltages

I prefer a scope-- but a volt meter is better than nothing

I think the pump check valve is gone, so turn the KO/EO
then turn Key off & see if press holds on gauge

Is the filter more than 5 years old?

Posted on Dec 08, 2012

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A lot of the problems are the PCM there is a 5 v regulator system in them and the solider joints crack or the three wire harnest that go to the pcm ware out after a while start the jeep and wiggle the three harness that go to the pcm one should make it stall usually the middle one but I've seen any of the three cause this problem quick check and no money involved trust me I've seen 4 or 5 cases and this was the fix.

Posted on May 03, 2013

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  • 38 Answers

Yes it seem to be your Gas filter.also check your Tps sensor

Posted on Dec 08, 2012

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Posted on Jan 02, 2017

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SOURCE: PCU replacement for Jeep Grand Cherokee WJ

car_parts.com can probably get you the part. I would be more suspicious of the Crankshaft position sensor. In my experience, PCM on chrysler vehicles are very reliable with good self protection devices. (not that the never go bad) In 23 years of working on vehcles I may have replaced 3 or 4 on the Jeep/chrysler. 90% of the cases I have worked on with your symptoms ended up with a crankshaft position sensor. If the check engine light does not go out while the engine is cranking then you probably have no crank signal. It is located on the left side of the bell housing near the rear of the engine block. Will have two 10mm bolts holding it in place. New one will come with a piece of felt or paper stuck to end of it. This is for spacing purposes. Hold it in against flexplate and tighten bolts. Paper will come off when engine is turned over. Done

Posted on Sep 15, 2009

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SOURCE: 1995 JEEP GRAND CHEROKEE RAN AND DIED WILL NOT START

IS IT THE 4.0L?IF SO U MAY HAVE A BAD CRANKSHAFT POSITION SENSOR.

Posted on Apr 28, 2009

  • 35 Answers

SOURCE: steps to replace fuel pump on 1999 jeep cherokee laredo 4wheel dr

how are the spark plugs?

would start with those.

the fuel filter is usually located under the hood by the intake manifold and attached to the firewall of the car. the pump is located right by the fuel tank and if you cant see it then its inside the fuel tank. (you will have to lower the fuel tank down to get to the pump.)

Posted on Aug 14, 2009

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SOURCE: 2000 Jeep Grand cherokee Laredo

sounds alot the the pcm it controls the fuel pump and ign system but the anti theft would keep it from starting because the key has a transponder in it programmed for that vehicle and that would kill all ign if triggered

Posted on Sep 27, 2009

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SOURCE: I have a 2002 Jeep Grand Cherokee Laredo with the

If you put the thermostat in correctly (spring towards the engine) that should be OK. Likely if the water pump wasn't leaking or had a bad bearing, you wasted your $ on that.
If you re-filled it and did not have the heater on high heat, you may have some trapped air in there. But, still overheating says another thing. If you have a blown head gasket, it can pump compression into the cooling system and drive the coolant from the core. It will also overheat. You can have that tested at most any decent shop that will do a hydrocarbon test to find that.I think someone makes a chemical test kit for that but not sure if it's very expensive or not. White smoke from tailpipe will also be an indicator as will be any coolant in the engine oil or coolant on one or more spark plugs. If it turns out that it has a head gasket problem don't stop looking for problems as often a faulty fan or obstructed radiator can cause the initial overheat that caused the gasket to fail.

Posted on Jan 16, 2010

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P.S. in minus 40 i don't even get out of bed... minus 23 here last nite... isn't winter grand

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