I have a 2000 VW Golf GLS 2.0, with 111k mi. It has developed an intersting problem. For a long while it had a rough idle when warm. It was a sort of gentle chug-chug when you stopped at a light or something. I just took it in for an oil change and now when I got it back, it idles alright, but when you step on the gas it revs to 2000 rpm then starts to stall. The rpms start to drop down to 500.
Can any one help me figure out what is going on?
Thanks, Ken