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Alan, The bacsv is what I believe you're calling the iac, and is on the bottomside of the throttle body. It adjusts the idle in tandem with the aacv when cold and when warmed handles the chore alone. I can't tell you how much help it is to have the manuals.
I suppose, from what I've seen of the inside of the "collector" on my car, it could definitely do no harm to clean it up.
Glenn
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"The only thing necessary for the triumph of evil is for good men to do nothing" Aaron Burke
1993 25th Anniversary Edition #63 of 301. R.I.P. Rojo 7/24/2008 She saved my life!
1997 Ebony Mica Pearl LSI. BLACKBERRY
1998 5-Spd Legacy GT Wagon in Glacier White: NUBURU
2005 Cadillac STS in Sandstorm Metallic: STORMY
Veteran and farthest traveler of 1st SoCal2MuseumsMeet2010.
http://www.subaru-svx.net/photos/user.php?RojoRocket
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