Definitely clean your IAT sensor. Made a noteable difference in my fuel economy.
#1
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There wasn't much junk built up on the sensor itself, but the wiring connection was a bit dirty. I sprayed the sensor with carb cleaner and cleaned the electrical contacts. Can't say which did the most good but my fuel economy has improved and the car feels smoother (this could be placebo, but the fuel economy is real).
#4
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Is it what I think the throttle position sensor is? Or the ISV thing? I cleaned my ISV thing and it helped my idle studdering problems.
That was a while ago.
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I need pictures to show me. Noobwareing with extreme prejudice.
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That was a while ago.
<IMG SRC="http://pictureposter.audiworld.com/24762/dscf0006.2.1.jpg">
I need pictures to show me. Noobwareing with extreme prejudice.
-Mike