2003 JEEP CHEROKEE LAREDO

2003 JEEP CHEROKEE
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HYDRAHEAD
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  • 1 POST
90,000 miles 4.0L inline power tech motor

[img:3fc9beb58b]http://www.2carpros.com/forum/automotive_pictures/99052_P8020007x_2.jpg[/img:3fc9beb58b]
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?
Sep 10, 2007 at 2:34 AM
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SERVICE WRITER
  • Experienced 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?
Sep 10, 2007 at 5:45 AM
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