Question about 1993 Jeep Grand Cherokee

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I have a 1993 jeep grand cherokee limited and this past week I went to start the jeep and it wouldn't start, after about 10 minutes I started the jeep and gave it a little gas and she fired right up. I drove the jeep bout 5 minutes and it died. Then the jeep would not start at all, so I had to have it towed.It acts like its on empty, but it has a full tank. We pulled the fuel tank down and replaced the fuel pump. Any other ideas? Thanks!!

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  • Mark Nichols
    Mark Nichols May 11, 2010

    Since you allready replaced the fuel pump I would verify that you have spark to the spark plugs when it wont start and/or when it dies.Once you have done this send me an ansewer and we will see if we can get to the bottom of your problem.

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Jeeps have a part called the crank sensor, when working properly it senses the electrical feild produced by flywheel. This crank sensor which is located on top of the tranny bell housing has been known to go bad. When this crank sensor goes bad the CPU does not get a crank reference and the computer will not fire the injectors. This crank sensor will fail under high temps and if it is old will fail also when cold.
You have to find out if the injectors are getting a pulse when the car does'nt start.

Posted on Mar 06, 2009

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