Rear Noise when turning right and over bumps

JPRODRIX

MEMBER
2005 FORD FIVE HUNDRED
6 CYL
2WD
AUTOMATIC
175,000 MILES

When I turn the steering wheel to the right, or when I go over a bump or pot hole, the car makes a grinding/squealing noise that seems located at the left rear end. There is no noise when turning the wheel to the left. I have read that it may be a) Struts, b) Sway bar, c) Brake calipers loose, d) a loose spare tire in the trunk. The noise is not always there. I had it a while back for about 3 or 4 days and, when I decided to take the car to the shop, the noise went away for several months. It is back now and I would like it fixed.
Any ideas or suggestions?

7 Replies

HMAC300

MECHANIC
48,601 POSTS

Check wheel bearings or strut plate maybe also check control arm bushings as well as sway bar links. It may also be rust in the brakes causing it. The problem is that you are saying it's not there all the time so it makes it harder to diagnose without actually seeing it. From your description I'd go for a wheel bearing first though. Take the tire and rotor off and see if you can feel any roughness there. If this is AWD it may be something in rear end so check fluid level and for leaks.

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Friday, July 17th, 2015 AT 12:14 PM

JPRODRIX

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Thanks for the quick answer.
I had a break job about a month ago. They changed everything, including the rotors. Now that you mention fluids, would that be the brake fluid or the power steering fluid? I remember reading something about that a low fluid could cause that noise too. I'll check the fluids in a while
The noise was there at one time and then went away. This time it is worse and has lasted longer. When I press on the rear left end of the car, however, I can't replicate the crunching noise.

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Friday, July 17th, 2015 AT 12:24 PM

HMAC300

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Brake fluid wouldn't do it, I meant if it was AWD to check fluid in rear end. When you check wheel bearing try turning strut as it may be the plate on top of the strut that is going bad. See pic or maybe the strut is loose on top from wear. But normally you can only check those when strut is off.

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Friday, July 17th, 2015 AT 12:28 PM

JPRODRIX

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4 POSTS

OK. Thanks.
I'll check that and will respond. It may be tomorrow by then.
Thanks again

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Friday, July 17th, 2015 AT 12:33 PM

HMAC300

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One thing I forgot to do is check tsb's and there is one for the rear suspension hearing a squeak or clunk the build date is 7/12/2004-9/21/2004 that build date sticker should be on door post drivers side. It's for a lower control arm bushing. Not sure if dealer will do this any longer due to age but it doesn't hurt to call. Pic shows new part numbers if you decide to do this your self or get the parts.

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