Runs rough at low RPM's
11-08-2009, 09:14 AM
#1
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Year: 1999
Model: Cherokee
Engine: 4.0
Runs rough at low RPM's
My 99 XJ starts and idles fine. When I leave the house and am driving slow through the neighborhood it runs very rough, like it is losing power. This just happens for a 1 or 2 min then it runs fine. I replaced the IAC valve but that didn't fix it. Could it be TPS or PCV? Thanks for the help
11-08-2009, 07:17 PM
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Year: 1999
Model: Cherokee
Engine: 4.0
Jeep Guy, I did a tune up when I bought it. I replaced the MAP sensor and the TPS today. I guess I'll see if that fixed it when I leave for work in the morning. It's just wierd to me that it only happens when the engine is cold.
11-08-2009, 08:10 PM
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Model: Cherokee
mine was runing like crap at low rpms and bogging down then taking off? i took throttle body off and cleaned all the carbon out of it and the sensors with carb/throttle body cleaner and now its fine?
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