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Topic Review (Newest First)
08-21-2013 10:12 PM
00jeeper00 By the way - I found this out after replacing all my sensors up and downstream as well as my headers.... Better to start repairs at the cheaper end of the scale..
08-21-2013 10:10 PM
00jeeper00 I just went through this very same situation and if I can throw my 2c in. I replaced the TPS with a non Mopar one - Problem still there. Switched it with a Mopar one - Porblem Gone. TPS exchange has to be genuine in my experience. See if you can grab one from a TJ or XJ thats original just to test the theory.
08-21-2013 07:17 PM
DmnSlyr We replaced the TPS and it didn't really help. We think it is the IAC giving us problems. When unplugging it (the IAC) there is no change in rpms.
08-19-2013 04:47 PM
DmnSlyr Thanks guys. I will let you know how it goes
08-19-2013 03:41 PM
Notoriously_rob True point- didmt think about that- cps is 89.00 so i would check that too
08-19-2013 03:39 PM
Big Sarge Before replacling the expensive CPS unplug the TPS (throttle position sensor) and see if the problem goes away. If it does then your problem is the TPS
08-19-2013 03:32 PM
Notoriously_rob Cps. Try to replace it- helped my idle and cutting off issues..
08-19-2013 03:31 PM
DmnSlyr It has like 140k miles and the throttle body has been cleaned but thanks for the link!
08-18-2013 11:05 PM
louczar How many miles on it? Has the throttle body been cleaned? I have read that a dirty throttle body (including a AIC). give it a shot...
08-18-2013 09:53 PM
98 TJ rough idle Help!

I own an 98 TJ 2.5L 4 cyl. When started, and is idling the rpms drop really low and sometimes kills the motor. We know there is a small exhaust leak somewhere (seafoam test). Any other ideas how to fix the idle? I leave for college in a week and I want to take it with me.

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