brakes lock after a few miles pedal gets hard.can drive after cool down on 1991 Chevrolet Astro

every stop increases problem

by in Las Vegas, NV on December 20, 2013
1 answer
ANSWER by on December 20, 2013
Most likely the brake booster is your trouble! Next time this happens, pull the vacuum check valve out of the booster then put it back in place, now try to move van, brakes free and not locked now? Get some help if unsure how to do this. Do NOT drive with check valve removed from booster!!

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