Originally Posted by v10enomous
What's the likelihood that I will need a new gasket when I remove the IAC for cleaning ? Is there any downside to trying to just spray clean it while it's attached ?
It takes 5 minutes, just take it off. Very little likelyhood of needing a new oring gasket unless you purposely try to take it off. Just unbolt the two bolts, pull it out, spray it down extensively with the throttle body cleaner, let it sit for a bit to dry. Spray the opening a bit with the throttle body cleaner. Wipe dry. Reinstall two bolts.
If you want to do it right, and add maybe another 5 minutes, take off the intakes and spray down the throttle bodies while you are at it. Those could also have some gunk causing the issue. Make sure the plates open/close real nice and don't have any gunk around.
Between those two things, which will maybe take 15 minutes total if you take your time, you'll likely fix the issue. In some cases you may need a new iac though.