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Maintenance, Troubleshooting and Diagnosis Need help? Having troubles with your GT? Need some maintenance tips? Ask your questions here.

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Old 08-19-2017, 10:04 AM   #1
5.0Powell
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Default Brake caliper / front end sound (pics)

Hello!

I am the new owner of a 90GT and It makes quite the earth-shattering rattle sound over bumps and I believe it's coming from the front brakes. I think this because the sound disappears entirely when I depress the brake pedal.

When I let off the brake pedal and go over a bump the clanking sound returns.

I had the car up in the air today. I didn't feel an extensive play in the wheel bearings. No obvious damage to the sway bar links or ball joints, So I took the brakes apart.

The pads and rotors themselves look decent, I've seen a lot worse. The calipers look they rattle enough to make contact with the rotor while it spins causing the shinny area on the inside. I took everything apart, cleaned and lubricated and still have the same problem.

Now I purchased the car a couple weeks ago and the guy I bought it from said he replaced the caliper pins in an attempt to fix the problem, which has me wondering, Is it possible I have the wrong ones? They aren't from LMR but they do look like this:

https://lmr.com/item/LRS-H5012K/1987...t-Hardware-Kit

The outside pads were also on the wrong side, so I swapped them to the correct side. The problem persist.

Because the rattle sound goes away when I am on the brakes, I still think I am dealing with a Brake problem and not a suspension issue.

Thoughts?
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Old 08-21-2017, 09:03 PM   #2
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The first thing that popped into my head was a warped rotor. That might knock the pads back far enough to let them rattle. That was followed by - are the anti rattle clips there? It sounds like the pads are free to move until you put some clamping force on them.
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Old 08-26-2017, 07:53 PM   #3
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I think the factory rubber bushings are shot. These should fix it.
http://www.maximummotorsports.com/St...7-93-P666.aspx
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Old 08-28-2017, 11:14 PM   #4
fb93
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Quote:
Originally Posted by Blown88GT View Post
I think the factory rubber bushings are shot. These should fix it.
http://www.maximummotorsports.com/St...7-93-P666.aspx
I installed those on the 93 a couple years ago. Make sure the sleeves go in straight, the lip is seated firmly against the caliper, and the caliper pins are straight and free of rust.

http://www.allfordmustangs.com/Detailed/2343.shtml
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Old 09-05-2017, 09:19 PM   #5
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Did you find a solution? I'm dying of curiosity here.
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