Something's broken. I have nothing to go on in from your question.
Get it checked out by an Audi specialist.
If you want to find a specialist, here's a directory link for you:
https://repairpal.com/audi-repair-in-mount-vernon-texas
RepairPal Certified shops can diagnose and repair your 1992 Audi 100. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.