rraj2k9

I have been hearing noises in the rear. Sounds like a rattle sometimes and sometimes a squeal, like a when a chopper (Bike) is running.

This only happens when the car is in idle or when I am reversing. This does not occur all the time but very random.

I have gone through all the posts, but have not found anything mildly related to this problem.

Any of you guys have any ideas what this could be ?

I drive a 99 A4 1.8T Q

Thanks