1991 Other Audi Models

1991 AUDI
151,000 MILES • 4 CYL • FWD • MANUAL
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LALENACVALLEJOS
  • MEMBER
  • 1 POST
while driving the car it made a thud sound and felt like the transmission down shifted after pulling over and shuting car off and restarting the car started making a screeching sound and the screeching gets loader as I accelerate, any ideas on what could be wrong?
Jan 16, 2008 at 7:09 AM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Hi there,

This is a bit hard to diagnose from what you have reported. If the noise is there in park or neutral and constant with engine speed (or there abouts) I would be looking at an engine driven accessory or engine mechanical problem, if there when driving only it will be a transmission or drive line problem.
Start looking there.

Mark (mhpautos)
Jan 16, 2008 at 7:44 AM
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