My SL1 started to stall when it idled. It has 160k miles and I put a new engine in it last year. I changed the spark plugs and wires first and that made it a little better but it still would drop to about 400 RPM or die when I came to a stop. I changed the oil just because I was there and it was about time. I changed the PVC valve and air filter, too. It still was having problems. The guy at the auto parts store suggested I try the MAP sensor. This worked for about two weeks but now its doing the same thing. I noticed that there was a black oily substance on the MAP gasket. I cleaned around the area a little but it was late so I didn't get it very good. So my question is, can a dirty air intake ruin a MAP sensor? Would it do this in a couple of weeks?
I have been reading different posts and I am going to clean the air intake and the throttle body tomorrow. Does anyone think that I should change the MAP sensor again?
Just FYI, there are no codes showing on the computer and the car runs fine when it is not in idle.
Thanks,
John