Very High Idle

[cromanyak]

Hi all. Haven't had much issues with the jeep until just recently. Sometimes when I start it the idle will go up to around 3000 and stay there. It goes away after I drive for a minute, but if I turn it off and restart it it does the same thing. Any ideas what might be causing this?

 

Chris

[ejndssn]

there has been some info IRT to Hi Idle if you do a search :brows: my problem was with the EGR valve needed replacement and the problem went away. do some research on this site so that you'll additional inforamtion to go by

[brigarpeon]

A couple of things could cause this.

 

Bad Throttle Position Sensor

 

A vaccum leak

 

My 2.5 is doing that right now, it has a bad intake/exhaust gasket

 

On a 4.0 the throttle body might need cleaned

 

(IAS)Idle Air Speed motor on 2.5 and (IAC)Idle Air Control on 4.0

 

There are other possiblities but these are probably the most common