I've got a 1992 Passat that will sometimes chug while in any of the drive gears unless you're going over a certain speed. It makes a thrumming sound and you can feel it chug, sometimes enough to make it stall. It does not do this in neutral for some reason and is worse in reverse.
I've checked for air leaks/problems in the fuel system and there doesn't seem to be any.
Any ideas?
Anna
ps...anyone know where to get interior trim parts for a 92 Passat? This one is missing a few things like window/door handle trim.