Damn Ok i will try it at lunch what should i do with the IAC if that doesnt work i have an IAC out by itself i can fool with if i need too...

 

Spray some WD40 around the spindle and with some pliers "gently" rotate the spindle left right of about a millimeter or two. DON'T FORCE IT or the guide rails will break.

 

This is the piece your are talking about correct? sorry i dont mean to be redundant but want to make sure im doing the right thing.
Could the plate being off really cause the idle to be high by 1200?


p.s. Stefano thanks for all the help man i am pulling out my hair over this lol.

What does this accomplish just so i understand what i am doing. would this mean the IAC was stuck??

 

Yes if the plate is 0.1 mm off it will allow more air in and idle high.

In the picture the arrow shows the point of the spindle, the one you are going to grab with the pliers. The WD40 goes at the base, where the spindle comes out from the motor, in order to dissolve whatever keeps it stuck in that position.
Keep in mind that the spindle can only move in and out when it works, the inner part of it is threaded and the stepper motor turns the shaft screw to push it or pull it. IT CAN NOT ROTATE, well at least not much, just a few mm in its play.

 

The engine will need a few start-stops to settle the IAC when everything is back on.

 

So if i understand correctly the whole thing point and shaft should move in and out if working correctly? because right now the only thing that moves is the shaft piece separately from the point. I know because i messed with it before i put it in...

 

Thanks much i will let you know how it goes will be out there for lunch.

 

It's broken. The plastic sleeve is moving but the shaft not. BUT It still should work in closing mode, that means when it pushes the spindle out to lower the idle speed. Since you have two, you can test one by keeping the other on the TB, to see what it does when it moves.

 

Update i just came in from lunch ready to shoot it lol well i wouldnt shoot it maybe someone elses vehicle

IAC that was in throttle body the point spins round and round. Swaped IACs Reset pcs no chance reajusted Throttle plate no change. its like the engine is just sucking in way to much air and cant stop itself.
The IAC i put in works like you said it should moves in and out just a little like 1/8 of inch and turns only to the side by the mm.

 

Ok the iac that spins is shot, the one that moves might be still ok. Now try this: Remove the big hose from the TB so you can see the plate. Start the Jeep and with your finger either push the plate down to further close the throttle or just put your finger over the slot to close it. What happens? does the idle drop? If yes you have to adjust the throttle by the little limiter screw BUT before you do this allow the engine to perform several cold startups in order for the PCM to re-learn the idle settings.

 

(RED) the Throttle plate have adjusted and fits very snug. No gap all the way around.
(BLUE) Adjustment Screw down to allow the throttle plate to close all the way.
(Green) IAC port when covered with both thumbs to allow very little air through Idle goes down!

P.s. How much is the IAC Supposed to move in and out.

 

So i have the one that spins round and round weird thing is its a adjustable screw????

Here it is with it apart In order from left to right. IAC motor, Outer shaft, Spring, Inner shaft, Cap.

Is this type of IAC made to be adjustable??

 

Thanks for the links fantic - there is a question that I haven't seen answered in those threads. I have the 242 TC and a hack-n-tap. Would everything still work with an 8.8? Or would I have to get an actual SYE?
(I'm afraid to hear the answer for this one ...)

 

Hey guys , What does the "GEN" light mean??

 

If I do a RC 4.5" add a leaf kit on my xj- can I put a pair of s10 leafs from the junkyard on it? If so, how would I go about doing the leafs? Will it sag?