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DRIVELINE NOISE AND NOISE QUIZ
Regarding the two recent posts on strange noises:
> On Apr 25, 2:31pm, Mike wrote:
> > My 89 Audi 100 is making a strange noise when in "drive". It makes a
> > "click click click" sound like a playing card stuck in a bicycle wheel.
Items to check, from my experience:
a) Is there a large rock stuck in the tread? Jack up each wheel and
tire to see if anything is stuck in the tread. I have had large
rocks that have
REFUSED to be dislodged without help.
b) Somebody mentioned the driveshaft rubbing on the heat shield. I also
experience of having a pipe hanger stretch (rubber donut) to the
point that the
rear exhaust pipe was rubbing on the driveshaft; the noise was mild
that I thought it was car age; I didn't recognize the problem until
I had a hole
in the pipe.
c) This wasn't a "bicycle spoke" squeal, but a moderate groan most
low speed. During the winter, with all the salt, cinders, and
gravel used on
the roads, I had dirt build up between the front brake rotor and the
shield, which was jammed in hard enough I had to use a screwdriver
2) RE: the underdash click
First place I recommend is to check the seat heater controls; does the
vary as you change the dial setting? You can hear the seat heater relays
and off while driving, but frequency is on order of 15 sec. to several
depending on setting. If this changes the response, don't know what to check
(sounds like a dealer problem to me).
If you DON'T have heated seats; do you notice an engine power change whenever
the relay clicks? It could be the compressor kicking on & off. Turn off the
control & see if you still have the problem. If that stops it, bring it back
to the dealer.
Good luck; hope y'uns (Pittsburgh colloquialism) have success with your
1990 Coupe Quattro with 102,000 miles (original engine, tranny, and clutch!)