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Grinding noise when reversing...

  • Thread starter Thread starter hollar2008
  • Start date Start date Jul 28, 2011
H

hollar2008

New Member
Jul 28, 2011
1
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0
Jul 28, 2011
#1
  • Jul 28, 2011
  • #1
Ok, my story is kind of long, so I apologize for that from the start. But, I really need some help figuring out my problem and would appreciate any help that could be given.

To start off, I drive a 2003 Mustang Convertible V6. (Any other specifications needed, please let me know)

Around June of this year, one of my friends was reversing and hit my rear end on the drivers side. What happened was we were going to a friends house, and I was following her. She pulled left into a driveway, reversed out, and pulled up beside me to talk to me (telling me to follow her movement to park in front of the house (that was currently on my left). So I pull into the driveway (which was also on the left beside the house) and as I was doing so, my friend was reversing to straighten up and accidentally hit the gas pedal instead of the brake (dumb, honest mistake). When she did, she hit my car completely perpendicularly. The direct middle of her rear bumper hit directly where my wheel was. And it was flat hit, so as I stated, was hit perpendicularly. The impact was pretty hard, though.

I tried driving the car after the impact, and at first it was fine. That was, until I got up to higher speeds and the car made this awful LOUD grinding noise. The next day, my dad and I took off the back wheel, took the brakes off (which seemed jammed seeing as how it was hard to get them off). We looked up inside the car, and everything seemed fine. We put the brakes back on, put the wheel back on, drove it up the road, and the grinding noise seemed to stop. It only made a few times while slowing down; other than that, nothing. Seeing as how I was to drive to college the next day, I wanted my dad to keep the car and make sure nothing major was wrong. I

He took it to two different mechanics who all said the car was fine, the wheels were fine, nothing was warped, the axels were also fine. The only damage done was to my bumper, the impact sent pressure to the bumper shattering the underside.

My dad then drove for it a month, and the noise had completely stopped. So he brought the car to me at college. Of course, when i drive my car I would notice things.

One time while reversing, it made the same grinding noise as it did when it first was hit. It was short, yet loud. And definitely a grinding noise. I called my dad, and all he could say was the mechanics said everything was fine, he looked as well and found everything fine, he had no clue what it could be.

Now I'm home for the summer, and the grinding noise still occurs when reversing. It doesn't happen EVERY time, and it can go weeks without doing it. But sometimes, it will grind. Yesterday it made the grinding sound three times. Before that, it had been 3 days since the noise. Before that, over a month.

Does anybody have an suggestions to what this grinding noise may be? I can also tell you that there is a whistling noise coming from the back of the car, and seems to be the loudest when braking.

I really would appreciate any help anybody could offer.
 

jrod2423

Active Member
Aug 15, 2011
176
2
29
Byesville, Ohio
Sep 11, 2011
#2
  • Sep 11, 2011
  • #2
well i would look at the rotors and brake pads first on both sides, makes sure they arent sticking or that the rotor is getting uneven ware, but that would be my first guess from your explanations.
 
N

Nick0509

New Member
Jul 12, 2011
10
0
0
Sep 11, 2011
#3
  • Sep 11, 2011
  • #3
It sounds like a dislocated (rear wheel) spring to the emergency brake shoe adjuster. The wheel, break pad assembly and rotor must be removed in order to see it.

BEFORE YOU START PULLING THINGS OFF If you can, lift the rear, put the rear axle on 2 jack stands.

With both rear tires off the ground, breaks off, put the car in neutral and rotate the tires several times back and forth, full rotation. It would be most obvious that the side that was hit would be damaged, but check both sides.

Since the rear is up check for side impact damage to the axle and wheel. Position your hands on the tire at 12:00 and 6:00 push and pull hard, look for movement, do the same 9:00 & 3:00, both sides. Even if there is no noise or movement I would pull off the rotor and check the brake spring area.
 
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