What would make all 4 wheel brakes lock up at the same time in a 1991 Camaro RS?
1991 Camaro RS. I purchased as a "roller". After much work, I got the engine running
again. Then when I drove it for about a 1/4 mile to test it, the brakes on all 4 wheels
locked up. I had parked it in the driveway and was going to left my wife try it out. She
got in it and it wouldn't hardly move. I couldn't even push it with it in neutral. What would
cause all the brakes to lock up, all at once?
How long did the car sit before you bought it? the proportioning valve may be messed up. Pull the wheels to see if the calipers are clamped down, crack open the bleeder and give the caliper a good smack to see if that breaks it loose, also check the condition of the brake lines, you may be replacing all of it.
There could be too much moisture in the brake system from sitting and when you started to drive it the moisture started to turn to steam and applied the brakes, once it cools down the brakes should release, try completely flushing the system but if it has started any corrosion in the system you will be replacing everything sooner or later. HTH
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