Ok guys this is weird, if I let my cherokee sit overnight and start it up in the morning everything is perfect but if i drove to work and then try to leave before it cools back down it will start up and idle at 2500 rpms. I’ve let it do that for atleast 30 seconds and it hasn’t went back down so any help will be appreciated thanks.

 

Throttle body sensor dirty?

 

Actually just went through cleaned all sensors in the throttle body and the throttle body it’s self.

 

Check for broken or unhooked vacuum line.

 

good suggestion. I was thinking a few shots of carb cleaner might point to the source

 

What year is it?

 

check your vacuum lines. Theres a broken line or a missing cap on the intake somewhere

 

I am having the same problem, very high RPM, after it warms up it settles down.
I need to locate the throttle body sensor and clean it.
I found one cracked vacuum tube.

 

What year?

 

1988

 

Go to my website www.cruiser54.com and do Tips 1 through 5 before doing anything else.

 

Will do, thank you.

 

Keep us in the loop.

 

I will, this won't be a rush thing, but I will be working on it and asking questions.

 

Don't buy any more parts until you've completed the tips.

Got a multimeter?