Need your guys' help: 2000 Grand Cherokee won't start.
5

Asked by Wesley May 08, 2014 at 05:04 PM about the 2010 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

4.0L Inline 6.
Okay, so I've tested the battery and starter, both are strong. We checked the timing and it appears to be unchanged. Whenever I turn the key to 'ON', I'm pretty certain I can hear the fuel pump priming the line...Still nothing. Battery's strong enough to continuously turn the engine when I attempt to start it. I haven't been able to test ignition/electrical or fuel pressure (like I said, I'm pretty sure the pump is working).
Any ideas or suggestions?

4 Answers
10

Martyf104 answered 10 years ago

Check the crankshaft sensor harness; if the harness or sensor failed, signal will not pass to computer then your ignition circuit remained open and no spark=no ignition. This happened to me once....

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5

Wesley answered 10 years ago

We've managed to narrow it down to either the Crahkshaft sensor (thanks marty) or the engine control module, we've got to get it diagnosed further to get it right

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