Question about 2003 Jeep Liberty

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I have a 2002 Jeep Liberty with a 3.7 engine. When you first start it, it starts nice, and idles nice. When it gets warmer, the engine quits and won't start again. What's going on?

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That is a sign of a bad crank shaft sensor. To be sure have the vehicle scanned for the codes. Good Luck!!!

Posted on Nov 15, 2010

Testimonial: "Very quick to respond :) Thanks for your time!"

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  • itsaaalllgoo Nov 15, 2010

    Thanks for the answer :) Where is the sensor located?

  • itsaaalllgoo Nov 15, 2010

    These are the scans that came up when the car was hooked up to a sensor: PO161 PO135

  • Roosevelt James Nov 15, 2010

    those codes are the O2 sensor that needs to be replaced

  • itsaaalllgoo Nov 15, 2010

    Will that solve the idling problem if the O2 sensor is replaced or does the crank shaft sensor still need to be replaced too? Thanks again for your quick replies :)

  • Roosevelt James Nov 15, 2010

    No it doesnt just replace the O2 senor and that should do it . If no more codes are appearing.Good Luck!!

  • Roosevelt James Nov 15, 2010

    After you replace the O2 sensor Have it scanned at autozone to check for more codes. The other codes may still show until the computer reset itself. Bout 100 miles of driving the vehicle . Or you can erase them with the scan tool. You can rent that tool from autozone and get a full refund when you return it .. Good Luck!!


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