Drivers Brake Grinding Please Help - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 08-05-2012 Thread Starter
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Exclamation Drivers Brake Grinding Please Help

Alright so to start off i have an 09 gt all stock and has been in a bad accident with previous owner(s). For a while now i have herd a grinding noice from the rear drivers corner of my car, i checked out around the wheel and found grooves worn into my caliper anchor. Since then i have replaced just about every part that should relate to the problem (which i have searched for and no one has had). I have replaced the caliper, pads, rotor, caliper anchor, the axle shaft, axle shaft bearings and seals yet the grinding is persistent. I noticed today that my sway bar appears to be bent on the drivers side, most likely because someone had done a horrible job welding it after it has completely broken. Also, there is slightly more play on the drivers side axle shaft than the passengers vertically (pulling axle shaft up and down) but when i swapped the shafts it continued both before and after i changed both bearings, seals and the drivers axle shaft.
So now that i have replaced most of the parts that would relate to it i am stuck and dont know where to go. I went to a local autoparts store and talked to their techs and they recommended i take it to the dealer or to an alignment shop and have them check the rear end. Anyone got any other ideas or possible solutions? Im posting a pic of my worn caliper anchor if someone would like more pics so they could help ill gladly take more.

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post #2 of 7 (permalink) Old 08-05-2012
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Ti fix it right you prob. need to take it to a body shop and have the frame checked on a rack. The quick fix is to grind the anchor down to give it clearance then sell the car.


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post #3 of 7 (permalink) Old 08-05-2012
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Are you sure you have the correct parts? Ford increased the overall diameter of the brake disc from 12.x" to 13.x" in 2011 (iirc). Is it possible you got the wrong ones? And drive's side axle....Are you paying someone to do the work or doing it yourself? These are rear wheel drive cars. The front is a spindle and hub assembly.

Post #2 has diagrams

https://www.allfordmustangs.com/forum...ms-needed.html
 
post #4 of 7 (permalink) Old 08-05-2012 Thread Starter
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Parts are correct, and the car just came back from a body shop last week and they had it on a rack. But they were looking around my bumper area cuz i was rear ended. I noticed the drivers tire was lower than the passengers but that would be because of the bent sway bar i assume? I began removing my parts again and i checked and the bracket that bolts to the axle assembly and that the caliper anchor is bolted to looks slightly bent. If this were bent/tweaked in some way could it possibly cause this problem?
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post #5 of 7 (permalink) Old 08-05-2012 Thread Starter
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This is what looks bent on that side
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post #6 of 7 (permalink) Old 08-05-2012
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Quote:
Originally Posted by cn314 View Post
This is what looks bent on that side
I'm picking up what you're putting down now...for some reason I jumped to the conclusion that we were talking about the front brakes. If anything is bent it can definitely cause contact with spinning parts. I assume you have lifted the car up, put it in neutral and spun that assembly to see if you can recreate it? I have ~2mm space between my rotor and the caliper mount. I also have about ~2mm from the outer edge of where my pads make contact and the outer edge of the rotor. You used plenty of anti-squeal when you redid the brakes also right?

Having an alignment shop check to make sure the rear axle is square under the body isn't a bad idea. Any signs of improrer alignment in the tread wear? The rear axle is only located by 3 points. If one of the lower control arm mounting points was moved due the accident it could throw off the rear axle.
post #7 of 7 (permalink) Old 08-05-2012 Thread Starter
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yes it is the same for me, ~2 mm from the top, but on the inner side the anchor is ~1-2mm its real close and when i compared to the passengers side it looked different
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brakes , damaged , grinding , problems , rear end

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