Question about 2002 Jeep Liberty
On the crank sensor you should have a 5 volt reference constant with the key on and on the other wire you will only have a pulse signal(square wave) on a scope. This is the signal back to the pcm for crank reference. If you have a scanner, hook it up and simply check for crank (CKP) signal on the data screen. The common problem after an engine install on this vehicle w/ a 3.7 V6 is the cam sensor gets left unhooked because it is hard to see on the right head and the wire gets hidden.
Hope this helps..
Posted on Apr 20, 2009
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Posted on Jan 02, 2017
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