Quote:
Originally Posted by ambush276
I am trying to figure out if my hard brakes are a fluid issue or brake booster issue. (before going out and buying parts).
When i press on the brakes they have a lot of resistance, but do stop the car. They do not go to the floor or anything like that, but they almost have a numb and are not too responsive. I tested my vacuum pump and it is getting like around 22 psi with the engine running. Door locks are not functioning correctly and the engine shutoff is very slow, and sometimes when the car is really hot it will not even shut off all the way( have to stall it out or kill push on engine).
Any suggestions?
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First ensure there are no other leaks. Any pre-existing leaks can exhibit symptoms elsewhere.
Plumb the handheld vacuum pump directly to the booster 17mm opening (engine off) and test to see if the booster holds vacuum. If not, you need a new booster.
Immediately after shutoff I heard a hissing noise by the booster area. See if yours does the same.