some one else just went thru this ended up being the throttle linkage was bent .Dont no if thats also your issue ,simple way to check for vacuum leaks is, remove air tube from throttle body with motor running, cover throttle body with palm of you hand blocking off all air .If xjj stalls no vacuum leaks if it does not youve got a leak/
.

 

Spray the intake manifold where it meets the head, all the vacuum lines, where the throttle body meets the manifold etc.

 

Good thought. Someone else on another forum found the setscrew had been screwed with by some PO.

He still needs to spray for vacuum leaks anyway.

 

if the motor dont stall yes

 

I was thinking just cuz he might find another vacuum leak anyway. A smaller one.

 

very possible mine was leaking from under neath were the intake bolts to the head ***** to spray those

 

I suggest snugging up the intake bolts just cuz they have a tendency to work loose. Work from the center out toward both ends with the engine cold. We checked them at every 30K tuneup at the dealership because it was so common.

 

All amazing input. THANK YOU!

im still at work, and it s5:53 am -_- so im working on a 14 hour day... yippie....

So when i get home, if i dont pass out behind the wheel... ill take a lookie see thanks guys.

 

I found a vacuum leak at a bad injector O ring a few weeks ago. Spraying it, it seemed like the intake manifold. (that's how I found the O ring, changing the gasket)

 

Hmmm thats another possiblity... i got the offer of over time, so i slept for like 2 hours and im back at work ahah, i still have the stock 1989 injectors, the ones everyone keeps telling me set themselves on fire -_-

 

Start spraying around with carb cleaner and see what you find.

 

i will, tminus 2 hours until im off work

 

the 703 injectors really made a difference with mine just saying ...

 

I am some what having the same Problem. But I just cleaned out my Throttle Body and My air control Sensor.

BUt my Jeep Idler JUMPS and Drops and keeps doing it. Does any one have a Diagram of the Vacume hoses? that i could Get a look at?

 

eratic idle sounds like iac might want to start a thread of you own state as much info as possible aboput issue and year