2003 Jeep Cherokee LAREDO

Tiny
HYDRAHEAD
  • MEMBER
  • 2003 JEEP CHEROKEE
90,000 miles 4.0L inline power tech motor


http://www.2carpros.com/forum/automotive_pictures/99052_P8020007x_2.jpg


Motor seems to run good most of the time except at stop light where it runs rough by missing out and has stopped couple of times in the last several months. It probably runs rough all the time but not noticed at speed.
Cruising down interstate it will be fine and then all of the sudden the motor misses out for a second and knocks off the cruise control. This it does approximatley once per hour or two.

Starts fine and runs fine when first started. Once heated up it starts running rough and does the above.

Besides this it runs great!

Got any ideas?
Monday, September 10th, 2007 AT 9:34 AM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Very nice trailer, Leo!

I have seen two things off the top of my head that have helped these motors. A professional fuel injection cleaning and an air induction service. Seaform is a good product for that. The intake valves get coated with carbon and the the fuel gets soaked into the carbon before it can fire right.

Are ther any codes present?
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Monday, September 10th, 2007 AT 12:45 PM

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