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