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Anyone happen to know a part # for a power steering pump pulley for 86 G.N. that's "steel" flat/smooth surface that the backside ( not ribs) of the serpentine belt rides on? I had to replace the R.J.C. aircraft light weight aluminum idler pulley because it fell apart, the pulley itself turned...

Thank you. I purchased a new I.A.C. motor because even though I remove it, cleaned it up, and also performed the reset, the car fortunately no longer drops dead after a highway run and certainly idles a lot better and steady, 800 810 rpm but the i.a.c. #" are still showing in the high 60's in...

I screwed up, although I followed this procedure, I failed to allow the engine to get up to operating temp. I wanted to remove the I.A.C. completely to clean the housing as well as the throttle plate, etc.. After I cleaned it up, I performed the I.A.C. reset using a paper clip ( jumped A/B on...

Hey Mike, What is the correct way to start from scratch on resetting the I.A.C. motor?

I Like this write up!!! I'm going to take another crack at this. I didn't allow the engine to be at operating temperature at my last adjustment, mainly due to the fact that the silicone hose for the turbo inlet was flush up against the i.a.c. connector and I couldn't unplug it to clean inside...

If That's the screw, Which I believe it is now. Then why is it that so many people are saying that this screw is often confused as being the idle set screw. From what I understand, The I.A.C. adjustment is controlled by the E.C.M. only.

I KNEW IT!!! A buddy of mine that is a old school "Mopar" head said the same thing to me. He said, I believe that Buick G.N. I.A. control is controlled by the on board E.C.M. by the foot of the passenger side, inside the car. But Mike, If you research this Turbo Buick site, everyone is saying...

Where the heck is that adjustment screw for the I.A.C. #'s???!!! The only adjustment I can find on my 86 G.N. is the idle set screw on the throttle linkage, I'm going nuts trying to find it.

THANK YOU!!! That's what is was..A bad ground.. The mounting screw was loose. I could probably use an old whirlpool washer water level pressure switch ( as crazy as it sounds) if this ever goes bad. After all, it's only completing a circuit and the washer part works in the same manner and is...

Hi, I found the issue as being a poor ground connection at the pressure switch located on the passenger side fender under the hood. I suppose it works by activating a diaphragm when under vacuum, similar to the old style water pressure switches in old style washing machines. How's your 86...

6 years and not ONE reply to this problem?? Or, is it that I'm not using this site correctly? I have the exact same issue that just arose, looking for a solution.