Question about 2002 Jeep Liberty

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MOTOR Hi I have just put a motor in a 2002 jeep liberty and have changed the crank sensor. I have power going to one side of wires on crank sensor but nothing to the other side, so jeep won't start anyone got any suggestions please?

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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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so both are 3.7L, is that it?
you never said what exacty didnt fit.
the flex plate to TC
or TC to A/T pump side mismatch.
????????
if its the flex then get the correct flex plate.
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Jeep Liberty 2002 woahs !
by porth21 - 2/1/09 7:35 AM In reply to: Jeep Liberty 2002 speedometer not working by Dannywon
I have a 2002 Jeep Liberty Limited with the same problem. The main problem I have found to be the routing of the speed sensor wires located on the rear difrential. They are 2 blue wires on my jeep and probably the same on yours. The problem is that they rub on the E-brake cable and once the wire is exposed they short and the speedometer and any other options running off they speed sensor quit working and that includes the tranny shift points and can cause the torque converter to not unlock and cause stalls. I am having the same problem for the third time and chrysler and jeep are both aware of the problem and unwilling to repair the problem or post a recall.

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