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Message: <blockquote data-quote="Dr Fildo" data-source="post: 811603" data-attributes="member: 10737">I am thinking of cleaning the IAC and throttle body. I've never done this before. Will it make much of a difference? Sometimes I get a hard starting condition, like it isn't getting enough air or fuel and it just catches when the starter is disengaged. Not a solid start at all. I'm pretty sure the fuel pressure is ok, although I've never actually checked it. I changed the fuel filter about 3k miles ago. Runs pretty smooth once started, but idles low and very occasionally it will stall or almost when shifting from park to reverse or drive.I have cleaned the MAF, but didn't notice very much difference. I have just over 170k - don't remember when the last time it was in an actual mechanics shop for repairs...if ever. And I know I've never cleaned the IAC or throttle body.</blockquote>