Brake problem - inconsistent bias
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Joined: May 2013
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From: Flaherty, KY
Brake problem - inconsistent bias
My brakes are doing some crazy things, which I believe is related to the front/rear bias, or proportioning valve, though I'm not sure.
When first starting it, and driving it, applying the brakes causes one wheel in the rear to lockup and skid (even on dry pavement), unless I'm really gentle on the brakes. I've not noticed exactly which wheel it is. This will continue for at least a few stops, then the brakes seem to work fine afterwards.
It seems that as soon as I stop the truck and kill the engine, it will do it again for a short time (few stops) after I restart it.
I've not done anything to the brakes lately-- there's no leaks that I can see, and the brake light isn't on. Braking performance seems satisfactory when it's not doing the one-wheel lockup thing.
Any ideas or suggestions on how to go about diagnosing / repairing this would be appreciated.
When first starting it, and driving it, applying the brakes causes one wheel in the rear to lockup and skid (even on dry pavement), unless I'm really gentle on the brakes. I've not noticed exactly which wheel it is. This will continue for at least a few stops, then the brakes seem to work fine afterwards.
It seems that as soon as I stop the truck and kill the engine, it will do it again for a short time (few stops) after I restart it.
I've not done anything to the brakes lately-- there's no leaks that I can see, and the brake light isn't on. Braking performance seems satisfactory when it's not doing the one-wheel lockup thing.
Any ideas or suggestions on how to go about diagnosing / repairing this would be appreciated.
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Joined: Jan 2001
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From: Virginia
Take apart the rear wheel that is locking up. I bet you have brake fluid or oil on the shoes. Just a slight leak will go unnoticed, but will make the brake shoes black and gummy. They should be dry and dusty. If you find they have been contaminated, you need to fix the leak and buy new shoes. You can't clean them off good enough, they will be soaked.
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