90q20v Starting/Idle problem

[Thomas Edwards]

Hey all, I'm new to the list.  I picked up a 91 90q20v recently and just
finished replacing the timing belt.  Now when I start the car it either dies
immediately or comes very close, but then the idle comes up to normal and
stays there.  It runs just as well as it did before, but when it drops down
to idle from a higher speed, it dives very low and comes back up, maybe
another small dip or two but levels out at normal rpms within a couple
seconds and will continue to idle just fine.  It does this at every stop. I
figure with all my messing around in the engine compartment I may have
disturbed something.  Does this sound familiar to anyone?  I'm fairly new to
Audis; hoping someone would have some tips on what to check.


Tom
Troy, NY