When the car is cold the car drives great, but when the car warms up the pedal gets harder and the wheels lock up and the idle jumps to 3000 RPM . I changed the brake booster and check valve and i still have the same issue. I bleed the brakes many times as well. I need your expertise. I dont know what to do.......
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3k RPM Idle and hard brake. Changed brake booster. Same Problem
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The problem is clearly related to the the vacuum leak
Maybe the hose has a leak in it?
The booster runs off engine vacuum. When you rev the engine up the vacuum goes away and you lose power brakes. It is restored instantly when you let the engine go to idle
A fun little experiment is to drive down the highway and give it alot of gas and try to work your brake pedal with the other foot
after 2 or 3 brakes the pedal will get hard.
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