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I have an 02 Jeep Grand Cherokee which shut down while driving and won't start back I have replaced throttle position sensor, mass air sensor, crank sensor, computer and also cleaned throttle body. I have pulled spark plug and getting no fire also can't hear fuel pump engage. Please help!

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Check the module that makes the spark plugs fire. Check the fuses first.

Posted on Nov 12, 2014

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Check the ignition module, could be in the steering column, could also be a anti theft condition.

Posted on Nov 12, 2014

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Posted on Jan 02, 2017

nobodyrick
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SOURCE: 96 jeep grand cherokee 4.0

I ve put coil pickup' crank sensor' coil still no power to fuse block on finder' no fire to plugs ' don't here fuel pump, this is on one another one blows fuse to the firing ever time I turn the switch on

Posted on Dec 09, 2013

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SOURCE: PO171 OBD-II Trouble Code " System Lean To Bank 1

Check PCV valve and be sure it is not stuck open.  Check for vacuum leak at intake manifold.  

Posted on Jan 01, 2009

Mikey108
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SOURCE: 2002 Jeep Grand Cherokee Lardo misfiring

You say you changed the cam sensor. A1391 code is a crank sensor on the top of the trans. bell housing.

Posted on Feb 24, 2009

emissionwiz
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SOURCE: '97 Jeep Grand Cherokee Ltd 4.0 liter; Will start but cuts off.

have u replaced the crankshaft position sensor? do u have any computer trouble codes? Kragen or Autozone will run the test for free.

Posted on Mar 12, 2009

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SOURCE: 1998 Jeep grand Cheroke hard cranking, sputtering, rough idling

In READING what you wrote, it appears that your car is difficult to start and pretty much is rough while running....It also appears that your are randomly replacing parts...How did you verify that the parts your have replaced had failed? I suggest you get a basic manual like chiltons or haynes as well as a decent digital volt/ohmeter, then do some testing. Pay close attention to map sensor test and manifold air temp. Having a good fuel pump does not insure that your injectors are clean enough to deliver a good spray pattern This will not show up on any test...you need to actually look at them. There are other items to look at but I think you will likely find your problem in what i mentioned. (you already checked for vacuum leaks, right?)
Good luck!

Posted on Jul 27, 2009

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1 Answer

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