finally got my 944 Turbo

[callmethewander]

just bought a nice 1987 '44 turbo, ive had several base '44s an S and an S2, I've always wanted a turbo. I found one that looks decent rides good and only has 82,000 miles, test drove it but haven't yet registered or insured it. I'll probably be selling off my S2 to avoid divorce court! The new car does have a couple little (hopefully) probs, One is a high idle, varies between 1200 and 1800 rpm, it did this after a highway test drive and wouldn't settle down. Any thoughts or input on anything about this car would be greatly appreciated, thx. I'll post a pic later

[mikepellegrini]

Congrats! Hope to see some pics soon.

If it's idling high and going up and down, I'd guess a vacuum leak. You might test the vacuum: How to Use and Interpret a Vacuum Gauge

[callmethewander]

thank you

[callmethewander]

not really going up and down it idles steady at about 2,000 after driving for a little while and won't go down from there

[fiat22turbo]

Idle valve hoses are leaking or the idle valve is stuck wide open.

TB or MAF leaking is another thought as well.

Might as well plan on pulling the intake manifold off and going through the AOS system and the hoses that hide under the intake before making any drastic changes to the idle adjustment, etc.

[callmethewander]

good news! thanks for all your help. I checked the idle adjustment screw, it was way loose, tightened it down and it brought the idle right down. I'll have to see if it stays good after some highway driving, but right now it's steady at 950 rpm. Found the info on clark's garage, that's a great site as well!

[jamess2]

Congrats. I've had an early 85 an 87 and a 90 s2.....but wanted at 951 from the start...I picked mine up not running a week or so ago and in the middle of trying to get the injectors firing. Mine is super rough but has lots of lindsey stuff a turbo s turbo and a lsd....just needs paint and interior work. I can't wait to drive mine!

[Techno Duck]

Setting the idle speed is a good start. Try doing it with the ISV disabled for the best results. Instructions available on Clarks.. just requires a piece of wire so two pins can be jumped on the diagnostic port.

Idle Speed Adjustment

[callmethewander]

congrats and good luck Jamess2, and thank-you Jon. Maybe I'll see you on the sat. after thanksgiving fun run!

[Chad T]

Originally Posted by callmethewander

good news! thanks for all your help. I checked the idle adjustment screw, it was way loose, tightened it down and it brought the idle right down. I'll have to see if it stays good after some highway driving, but right now it's steady at 950 rpm. Found the info on clark's garage, that's a great site as well!

My idle was wandering all over the place after I rebuilt the throttle body. Finally a drop of blue loctite on the idle screw got it to stay put.