Finding the Darn Idle Speed Screw

[Telerding]

This is a really dumb request, but I've looked at least 5 times, and still can't see it!

I'd like to adjust my idle speed down a bit, but cannot find the screw in the mess of hoses, pipes and parts on my engine. I even have a couple of pictures of the darn thing.

Any ideas that might help me find it?

[Ronnie's.930]

The pic in post #9 of this thread shows right where it is - http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/547032-sticky-common-answers-why-my-car-doesnt-start.html

[Telerding]

Finally found the screw! It was actually under the intercooler, out of sight. I could just see it from one specific viewing position on the left, with my cheek resting on the fender.

Not convenient, for sure. Removing the large vent hose allowed better access.

[voitureltd]

Cheek on the fender?, watch out someone might get the wrong idea. My wife often accuses me of more affection to the 930 than to her.

[1986 930]

Originally Posted by voitureltd

Cheek on the fender?, watch out someone might get the wrong idea. My wife often accuses me of more affection to the 930 than to her.

+1 on that one!

[Telerding]

After the big hunt, catching the idle screw was anti-climactic!

I turned the screw up to 90 degrees from the initial point with no change in idle speed.

Still idling about 1080 rpm when warm.

How sensitive should this screw adjustment be?

On the cheek to fender issue, I have always been in love with my favorite cars. My wife does not feel the least
threatened!

[voitureltd]

Originally Posted by Telerding

After the big hunt, catching the idle screw was anti-climactic!

I turned the screw up to 90 degrees from the initial point with no change in idle speed.

Still idling about 1080 rpm when warm.

How sensitive should this screw adjustment be?

On the cheek to fender issue, I have always been in love with my favorite cars. My wife does not feel the least
threatened!

It's not very sensitive so a few 360 degree turns clockwise to lower idle, should have an effect.

[Ronnie's.930]

Here is a thread (one of many) regarding high idle problems -

high idle when warm

[mark houghton]

The first time I had the motor out, I "hooked on" an extension to the idle adjusting screw. Got tired of contorting my arm and blindly fishing around back there with a mondo-huge long screwdriver, searching for the screw. Now I just grab the extension to the left of the IC when needed.
Once set, a 90 degree turn should give you some results...as in maybe a couple hundred rpm change. If not, you've got some air getting in there somewhere, keeping your idle high.