10 years ago in FORD
When I slow down to make a turn or just to stop in my driveway the engine will rev up when applying the brakes. It does not happen all of the time. It gives you a rush because you have to apply the brakes much harder to keep the car under control.
Answers (3)
Check the one-way check valve on the booster, as well as the hoses and booster.
check the vacuum hose to the booster for cracks or leaks also
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