I hosed out the IAC on our Camry with spray carb cleaner. It did the
trick.

sandycru...@gmail.com wrote:
would it be ok to use another

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You could use emission control safe carburetor cleaner or some other
type of penetrating lubricant. The idea behind Tri-Flow is that the
teflon component leaves behind a more durable dry film lubricant.
Sorry to say, I think I've discovered all these ideas are short term
fixes. Can work perhaps a year or two and then you need to replace the
valve anyway.
Interestingly, last time I did this I got a brand new defective IAC
valve from the dealer, but the replacment has worked flawlessly.
I checked with the lead mechanic. His only advice was to lubricate the
valve perhaps every six months as preventative.
Mechanics think of WD-40 as more of a water dispersant ("WD") than a
lubricant. You should be able to find lots of "penetrating oil"
aerosols locally.
Just go easy because that can attract dirt even though the air is
filtered.