1994 Audi cabriolet ,2.8 L ,rear wheel drive ,140,000 miles,rag top
1. when I start the car the ac works fine for awhile. But when I come to a stop light or have to hit the brakes hard it will shut down. When the car is stopped and restarted it will be fine again. Do I have gremlins?

2. the rag top does not work by the switch and will not release manually.

3. the tac and speedometer work together sometimes. But allot of times no tac.

4.the keylock hangs up in the ignition causing windows not to work and still ingageing the starter. Can I replace the lock and ignition from a junk?

I know this is allot but please help me if you can.