Need your guys' help: 2000 Grand Cherokee won't start.
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?
Have you scanned for codes?
Yes I have, OBD reader isn't giving anything.
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....
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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