Erratic Idle. What's wrong?
 

Hey guys,
I drive a 00 5spd.
During the last 3000 miles, when I'm at a long stop light and looking down at my RPM needle it goes below the 500 range and then fight its way back up to the norm, which is around 700. Today however, it finally dropped so low that the engine stalled out. I turned it back on, and waited maybe 10 seconds for it to do it again. The needle drops to about 350rpm then goes up to 700, then drops all the way down to zero. This happened when the car is already warmed up. On cold starts, the idle would also be erratic, but the rpm range is in the 1100-1300 range so it never drops past the stall point. Can anyone shed some light into this?
My ECU, IACV, and Alternator was changed within the past 3000 miles.
-khanh

I had a similar problem on a 2000. It was the plastic intake manifold that was leaking. Very difficult to detect, a friend found it with a smoke machine, end of problem.

:werd:That's exactly what I would suggest. Symptoms point to that problem.