bad brake peddle

[roboutlaw]

We have a 1998 Chev. suburban in the shop came in with a bad brake peddle found rear brakes down to rivets with drum's on the rear also found power booster has a leak when pushing on peddle possible caused by leaking master cylinder, we replaced both of these also we bled the system and can get a great breaks when the Vachel is not running but when you start the Vachel the peddle goes to the floor and we cannot get anymore air out of the system i think we have possibly 2 gallons already used in the process also we thought the problem was possibly front calipers also replaced them no change also changed the front break hoses also no change and today i have tried the power bleater and this also has no change it does have 4 wheel abs we used our modis to activate the abs also no change I think i am ready to go crazy over this one has anybody else had this problem and if so what is the answer or the fix?

 

Rob Ostrom

Ostrom's

Minong Wi

715-466-2377

[CARMandP]

I had one a few months ago that we bleed and bleed and adjusted the rear brake shoes up and everything. It was a 94 S10 Blazer with 60k. Grandma's cream puff. The customer stated that the master cylinder had been changed so we didn't replace it to start with but after several days of fighting with it and replacing the ABS module, we replaced the "new" master cylinder with a brand new one and the problem went away.