2001 Jeep Cherokee, 37k 4WD

Tiny
RSTEIN
  • MEMBER
  • 2001 JEEP CHEROKEE
I keep getting the check engine light coming on after resetting and driving for about 2 or 3 days. Bought this jeep new, and wife drives it (not very far). The gas cap has been changed and I replaced the rear CCV hose to the manifold. I get codes P0442 and P0455. I do not smell gas under the hood? Wife says that jeep seems to burn more gas, and runs rough. Any thoughts?

Thanks for your assistance.
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Saturday, December 30th, 2006 AT 10:03 PM

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Tiny
SERVICE WRITER
  • EXPERT
It probably has a 4.0 motor?

The get a carbon build up that contibutes to your symptoms. HAve a professional fuel injection cleaning service done and also clean the thottle body and intake valves. The latter you can do, I'll explain if needed.

After these are done, periodically run the rpm up to 3500 in low gear to help break up the deposits for a mile or so.
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Saturday, December 30th, 2006 AT 10:14 PM

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