Can you clean the IAC valve?
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I got my tb back from being ported and coated. I saw my iac valve was a bit dirty. So I took it out and cleaned it with papertowel. No water or anything like that. Is it going to set a ses light? I did touch the sensor while I cleaned it. Hope it will be ok. Those things are $100.
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The IAC valve is just that, a valve. There is no sensor. It has a rubber stopper that moves in and out to open and close the idle air bleed. You should be fine if that is what you cleaned.
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maf or throttle plate cleaner will work fine just keep spraying and wiping it down until you get all the carbon off... you might want to clean out the spot in the throttle body where the sensor sits, it will have carbon buildup in there as well