powermaster whine

[redwolf]

My brake pedal went all the way to the floor a few days ago coming down a hill, and ever since then, it has been really soft and spongy. The brake light was on continously for about a day afterwards, then went off. The brake fluid is right, neither high nor low, and the powermaster motor runs for about 6 seconds after starting the car, then stops like its supposed to. Then tonight, whenever I would first apply the brake to stop, I would hear a whining noise that sounded like power steering motor whine, but only when braking not turning. Fluids in brake and power steering resevoirs are good, and I don't appear to have any leaks. Any ideas or help would be appreciated. Thanks, Jeff

 

[dmk2]

Brakes

I just had the same thing happen to me.

Be carefull if you need to stop quick... the pedal may get hard fast.

I ended up changing the powermaster because of a leak in the rear of the pump (I think the seal failed). I am having some problem with the breaks locking up intemittantly. I am still trying to figure that out. Anyway my problem with the whine is gone and the brake light does not come on anymore. Just be carefull!

 

[oldtimer]

I had the same problem. New accumulator solved it.

 

[Turbonics]

Best deal going (WHILE IT LASTS) is getting an entire PowerMaster assembly with EVERYTHING fresh AND a Lifetime Warranty for under 300.00 from Advance Auto. Got ours on-line from them for around 280.00 with shipping.This entire assembly from GM would be 1200-1500.00, if it was not discontinued!

The @#$%^& accumilator by ITSELF is 120.00 from GM!!

Thinking about buying another one to store for 10 years, then sell it to pay for our youngest kid's college tuition.