Hydroboost is pissing me off! Please Help!

GBodyGMachine

Forum Member
I have been fooling with this for about a week now. First it was a bad master, then pump, then a bad hydroboost, today was leaky lines.
Finally got the car on the road and all seemed great for about 2 blocks.
First thing I lost power steering, went to hit the brakes and the pedal went to the floor. Then everything came back for about a block and then when I applied the brakes they stayed applied. O, then the pump started to howel.
WTF
Hydroboost, master, and pedal assembly are from an 85 GN. Pump and Gear box are from an 84 GN.
Any help would be excellent. I am out of ideas.
Jeff
 
to be honest, the braking system should not be affected... if the hydroboost fails then the pedal should get very stiff (no power assist), not drop to the floor. all hydroboost systems if worked with are still separate power steering and brake fluid systems that just get their power from the power steering pump. the only way that the pedal would go to the floor is if your hydroboost system uses one fluid for both (which would be extremely odd if you ask me) and there was air in the lines.
 
did you get the setup from powerbrakebob?

I heard he is all helpful when youre looking to buy, but once the order is paid for, he disappears
 
to be honest, the braking system should not be affected... if the hydroboost fails then the pedal should get very stiff (no power assist), not drop to the floor. all hydroboost systems if worked with are still separate power steering and brake fluid systems that just get their power from the power steering pump. the only way that the pedal would go to the floor is if your hydroboost system uses one fluid for both (which would be extremely odd if you ask me) and there was air in the lines.

Thats what I cant figure out. I have bleed the brakes multiple times, I should have no air in the lines by now.
The pedal just acts funny. Sometimes its hard, sometimes its really soft.
Jeff
 
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