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Thread: If you haven't cleaned your IAC.... Reply to Thread
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Topic Review (Newest First)
02-17-2006 05:05 AM
VAGGEN Nice! That was really helpful! Think I might tackle this on Saturday.
02-16-2006 03:23 PM
VincentD Try Michel Briand's website, he's posted pictures of cleaning the IAC plus others...

http://pages.infinit.net/mlbriand/saab/iac/page1.html
02-16-2006 10:51 AM
mattlach
Quote:
Originally Posted by BurnsSide42
Eh - that's normal of those 9-5's - hope it was still under warrenty

Sadly not. It started acting up a half a year out of warranty...

About the same time I had to change my DI casette... (cut I'm getting that one covered by the recall )
02-16-2006 09:06 AM
BurnsSide42
Quote:
Originally Posted by mattlach
Ahh... I recently had to replace the throttle body because the coils in it were all messed up Kept kicking it into limp home mode...
Eh - that's normal of those 9-5's - hope it was still under warrenty
02-16-2006 08:35 AM
VAGGEN
Quote:
Originally Posted by Passion4_900
AIC=IAC... "Automatic Idle Control"

basicaly controls the ammount of air going into the engine while you are idling. If you turn on the A/C, that puts a strain on the engine and without the AIC, the engine would most likely stall. When demand for the engine is greater, the AIC opens and lets more air in the engine to raise the RPM's a bit in order to keep up with the demand for engine power (A/C, rad fan, seat heaters...etc..)
Thanks for the explanation! I am sure mine could use a good cleaning... every now and then I can feel the car "kick down" a notch, if you know what I mean.
02-16-2006 08:01 AM
mattlach
Quote:
Originally Posted by WyldSaabMan
well you Mr. aero with your T7 Dont have one, instead since your throttle body is electronic, the computer can just alter the throttle angle, and can control idle that way.
Ahh... I recently had to replace the throttle body because the coils in it were all messed up Kept kicking it into limp home mode...
02-16-2006 06:05 AM
WyldSaabMan well you Mr. aero with your T7 Dont have one, instead since your throttle body is electronic, the computer can just alter the throttle angle, and can control idle that way.
02-16-2006 04:04 AM
mattlach What is this IAC of which you speak?
02-15-2006 12:50 PM
WyldSaabMan I like calling it the IAC so much more

Idle Air Control makes so much more sense in my head
02-15-2006 10:14 AM
Passion4_900
Quote:
Originally Posted by BLE 9-3se
Stooopid questions... IAC or AIC valve? What is it and what does it do?
AIC=IAC... "Automatic Idle Control"

basicaly controls the ammount of air going into the engine while you are idling. If you turn on the A/C, that puts a strain on the engine and without the AIC, the engine would most likely stall. When demand for the engine is greater, the AIC opens and lets more air in the engine to raise the RPM's a bit in order to keep up with the demand for engine power (A/C, rad fan, seat heaters...etc..)
02-15-2006 09:16 AM
BurnsSide42 Use foaming engine degreaser - followed by rinse with HOT water (will evaporate most of the water after on it's own) and shake dry. (or blow out with compressed air) This is how I've done this everytime with success every time. Well worth the 10 minutes it takes.
02-15-2006 09:14 AM
VAGGEN Stooopid questions... IAC or AIC valve? What is it and what does it do?
02-15-2006 08:45 AM
stromer I'll add this to my list because I have similar signs as you did. I've never researched it before, so thanks for the concise procedure.
02-15-2006 07:45 AM
Tweek's Turbos
If you haven't cleaned your IAC....

Clean it now! its well worth it.

Background:
As the weather cooled down, my idle started to stick at 2krpms. Also after long trips, when stopping to pay tolls and whatnot, my car would stall out. I thought that was the extent of the problems.

How to: Sorry no pics. T5 ng900.
Remove plastic engine cover.
unscrew hoseclamps on either side.
AIC valve should be soup can sized thing just to the left of throttle body.
Peal hoses of either end.
Remove electrical connection, just squeze fitting and slide off.
Pull AIC and rubber bushing straight up.
Clean out with carb cleaner, and give a small shot of oil I used Penetrating oil.
Reinstall.

Not only did this cure my cold high idle off throttle, The car has never ran smoother. It doesn't even feel like its running at stops, and this is with a catless dp and saabsport. It also feels like it shifts better, probably because the rpms drop faster with the clutch in.

Seriosly if you haven't taken the time, its worth it. Its only a 30min job, and you only need a flathead screwdriver and some carb cleaner.

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