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Old 03-10-2018, 02:04 PM   #1
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Grinding noise from rear

Hey guys, I have stored my mustang over the winter and just got it out today for the first time this year. Took it for a spin around the block and I noticed a very subtle grinding type noise coming from the rear. Sounds like either the drive shaft or the differential or maybe even the rear breaks. It almost sounds like something rubbing against sand paper. It is not very loud you can not hear it when accelerating only when coasting above 15mph. This is only the 2nd year I have had the car and stored it over the winter both years. Last year this noise did not occur. Any idea what may be the cause of this sound and if it is anything to worry about? This year the car did get very wet from moisture/condensation building up in my garage even tho I had it covered. Maybe some moisture possibly got into the differential? Any suggestions or advice is gladly welcomed. Thank you.
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Old 03-11-2018, 05:12 AM   #2
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Drive it around for a few days. It's probably rust built up on the rotors. My brakes make scrapping sounds for a few stops, 30 minutes after washing it. Our Edge does the same thing after a wash.
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Old 03-11-2018, 06:45 AM   #3
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I put drilled and slotted rotors on our Horse and it doesn't make that grinding or rubbing noise after a wash as bad as with stock, but it still will make it. Our water from the creek has a lot of lime in it. Hard water stains on the shower doors and such. The stock rotors after a wash were pretty noisy for a mile. Sitting all winter especially after moisture would certainly cause some surface rust.
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Old 03-12-2018, 12:24 PM   #4
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Too many Big Macs over the winter?
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Old 04-14-2018, 04:32 PM   #5
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After driving it more I think its the rear breaks.
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Old 04-14-2018, 07:09 PM   #6
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^^^ I'm sorry, but that would be BRAKES.^^^^
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Old 04-15-2018, 11:39 PM   #7
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Quote:
Originally Posted by oxfordwhite View Post
^^^ I'm sorry, but that would be BRAKES.^^^^
Sounds the same, though.......
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Old 04-20-2018, 08:30 PM   #8
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My money is on flash rust of the rotors that should wear off with use.

If it were a bad bearing in the diff, it would be more of a rumble (ask me how I know).
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