Almost had an accident, so I slamed on them,now its kinda hard to stop. kinda like the booster is out, any ideas, can you kill the diaphram in the booster if you slam to hard?

 

Anything is possible, but it's rare for boosters to fail on any car. I would try bleeding the brakes and see if that helps.

 

Does it feel any different with the engine running or off? If not it's the booster.

Check the vacuum hoses before getting into the booster. Getting that thing off is a real PITA job as it's bolted on from inside the passanger compartment.

 

Have you checked the brake fluid level? Rare, but it is possible to 'pop' a brake line, leaving the car operating on two wheel braking .... until the low fluid level alarm chimes ...

 

The pedal feels the same, with the engine running or not,I will keep you guys posted at what I find, I am messing with it now.
Thanks

 

Could be the pistons in your front calipers are jammed. Does it feel like the brakes are dragging?

Dennis

 

Not really, I lifted the car last night and rolled the front driver wheel, rolled good. I am out of ideas, Is there anyway to check the booster with a mity vac hand held unit?

 

Fluid level good, any other ideas?
Thanks

 

Justin - I remember when I changed my brake master cylinder I noticed that the diaphram was filled with break fluid that had aparently leaked out the rear seal of the master cylinder and into the diaphram. I suctioned the brake fluid out and noticed that the brake pedal wasn't as firm as it used to be. Prior to replacing the master cylinder I simply thought that was how 928 brakes were supposed to feel. Maybe you have fluid in the diaphram. It should be easy enough to check by carefully removing the vaccuum connection from the booster and doing some probing inside. Good Luck!

 

I'll give it a try, Thanks

 

I misread the original post. It's not a hard pedal, it's that the car is hard to stop. (Or both?)

Mushy or solid?

 

Justin, I think you are right, if you have a very hard pedal, and you have to push extra hard to get normal stopping power. If you stop the engine and apply the brakes several times, you would bleed off any vaccume in the booster. Push the brake pedal hard, then start the motor. The brake pedal should sink under your foot if the booster is working correctly. Make sure the vaccume hose to the booster isn't collapsed or leaking. LOL

 

Solid, the pedal will depress with alot of force, like the booster is bad.

 

Did that, and the pedal feels the same, with or without the car running, hard.

 

OK. Back to the top: Check vacuum plumbing to the master. I'd also look underneath the dash to check the linkage. No hunch, I'd just do it.