Sounds like John Hanks is right, throttle position sensor.... take out the sensor or get access to it by removing the intake so you can see down into the throttle body.......and clean the heck out of it. If the problem is better (rough idle or low idle), safe bet the throttle position sensor is the issue and they are easy to replace..... if you know someone that has one, you can also hook up one of those diagnostic computers and tell it (the jeeps computer) to raise the idle speed, if it won't do it = throttle position sensor is to blame.
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Sounds like John Hanks is right, throttle position sensor.... take out the sensor or get access to it by removing the intake so you can see down into the throttle body.......and clean the heck out of it. If the problem is better (rough idle or low idle), safe bet the throttle position sensor is the issue and they are easy to replace..... if you know someone that has one, you can also hook up one of those diagnostic computers and tell it (the jeeps computer) to raise the idle speed, if it won't do it = throttle position sensor is to blame........ I have one of these jeeps, and the crank position sensors can go bad too, fairly common actually......however usually they just won't start. (since the computer doesn't know what position the crank is in)...... this sensor is also fairly easy to replace..... just hard to reach.
Sounds like John Hanks is right, throttle position sensor.... take out the sensor or get access to it by removing the intake so you can see down into the throttle body.......and clean the heck out of it. If the problem is better (rough idle or low idle), safe bet the throttle position sensor is the issue and they are easy to replace..... if you know someone that has one, you can also hook up one of those diagnostic computers and tell it (the jeeps computer) to raise the idle speed, if it won't do it = throttle position sensor is to blame.