prescott

I fix one thing then another thing happens!

Fixed my electrical gremlins....finally! Now when turning left into a parking space I hear a grinding sound coming from the passenger front tire/brake rotor. It sounds like the brake is connecting with the rotor, but I'm not applying the brakes!

Anybody have this happen to them? Whats the fix?

Thanks in advance!
Brian

Mrmerlin

Brian your machine is talking to you now you have to listen.

NOTE it is helpful if you would put your year and model into your signature ,
simply click on user CP at the top of the page then go to edit signature.

I would jack up the RF wheel,
and see if there is play at the 12/6 and 3/9 positions,
you may have a loose wheel bearing or a failing wheel bearing.
Could also be a loose fender liner or front block off plate,
A cracked frame would show up on the side of the frame between the clamps of the lower control arm

NOTE the bearing should be inspected if your adjusting it.

There could also be a stone in the backing plate thus creating the rubbing noise , also check the caliper bolts and the pads to see if they are properly attached.

What was the last thing you fixed?

Speedtoys

Last time that happened to me, it was a shoe from the cyclist I ran over earlier that day stuck in the lower A arm.

*kidding*

But..last time that happened to me..it was the wheel well liner.

prescott

Its a 1988 S4 Manual. I've not touched anything with the wheels, breaks, suspension at all. All electrical fuses (last replaced #5) last night, brake/stoplight bulbs last night, and 53 relay for fuel injector about 2 months ago. This sound started in the last 24 hours. Drove it home last night, all highway, no bumps or other incidents.

Good advice. I will check it tonight. I hope its just a rock or the liner!

Thanks

Mrmerlin

If you just did hiway driving ,
check the front block off plate they can crack at the mounting bolts,
and then get pushed back into the tire area from wind pressure.

NOTE the liner has to come out first to inspect the mountings of the block off plate

MFranke

What size / offset wheels and tires are you running?

Gary Knox

Brian,

Is it a 'grinding', or a 'groaning'?? IF it is groaning, the power steering reservoir might be low, as the steering pump then 'groans' at full lock. IF it is, use Dexron ATF in it, not PS fluid.

Gary-
(old ASU Sun Devil, now stuck in 10" of snow!)

prescott

Here's a quick update on the grinding noise.

Turns out one of the front passenger side brake pads as worn down to metal. No brake pad warning went off, cause it didn't have a sensor. Bearings were ok. Calipers needed a rebuild.

Front rotors were replaced with crossdrilled ones, new pads, repacked bearings, new brake lines and all new fluid. Front calipers were rebuilt.

Quick drive home and no squeaks or grinding was heard.....priceless.....ok, it cost alot.

prescott

Tire sizes Bridgestone Potenza (bought with the car) on Gold BBS wheels

F 225/50/R16
R 245/45/R16

Soon to be replaced with 18 inch Panamera 5 spoke wheels with Continental DW

F 225/40/18
R 265/35/18

Pics coming soon!

Mrmerlin

Glad you got it fixed,
I admit I didnt consider that the brakes would be worn down

James Bailey

not sure we knew he was on the brakes while turning ..

dr bob

The pad fell against the rotor when turning.




When I got my car with 22k and the original pads, I logged the thickness then and at least annually for the next several years. I was more than surprised when I got a pad warning one day. WTH?? They were fine last time I looked.... Inspection and they were barely fine, so all new went in with a new sensor. As much as I know that I and every other user here is religious about pad inspections and replacement, I just can't see bypassing the wear sensors. If we are that diligent, the old sensors go to the new pads no worries. If we miss, it's a $15 sensor rather than a $100+ rotor.