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Posted on Dec 19, 2010
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Wont starter very slow - 2001 Jeep Grand Cherokee

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ZJ Limited

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  • Jeep Master 17,989 Answers
  • Posted on Dec 19, 2010
ZJ Limited
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Sounds like you tested the alternator, how did you test the battery, did you take it out and get it load tested? If not it can still be the be a weak battery.

A bad crank postion sensor can be intermitten till it just fails, causing syptoms that look like you ran outa gas. So its one of 2 things (maybe both in worse case scenario) CRANK POSTION SENSOR, Or a fuel pump. Honestly I suspect a crank sensor if its the 4 litre engine. But like the poster said check the valve and see if any fuel comes out. If so you got yourself a bad crank sensor.

Also heard of some really really wierd issue with the PCM bolts grounding out the ECU, might try backing those out and it just may be the cause.

I hope this helps (remember to rate this answer).

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