Audi 100 '91 - Transmission won't shift.
 

Hi- I got two problems, one more serious than the other:

1) This 1991 Audi 100 is my first Audi & automatic transmission car as of 12/2005. It drives great, but recently I'd be driving and when I come to slow down or stop, it'll gear down to either 1st or 2nd gear (I don't know), but it doesn't seem to wanna shift up. When I stop and let it sit for 10-15 mins, then it'll drive fine for another 2-3 miles then the same thing happens.

2) When I drive and come to slow down, say to turn or a stop sign, sometimes the car turns itself off. I'd put it in Park and start it. I don't know what caused that, but the idle seems OK. There was a vaccum problem when I first got the, I replace a cut hose and the problem was gone. Now this. HELP PLEASE!! Thank you.