1989 Pontiac Grand Prix "vacum power booster" Questions

...power brakes You have a problem with your master cylinder/Brake Booster or you have lost vacum to the master cylinder. Before doing this repair I highly recommend you get the Haynes Repair manual on ...

...power and erratic idle. Replaced exhaust,IAT,air and fuel filters,plugs and wires,O2 sensor,ignition coil pack,throttle position sensor.Same problems exist.Any ideas would be greatly appreciated. ...

power brakes. don't believe to have a leak or at least one that I can hear engine runs fine Check vacum at brake booster if you have vacum there bad brake booster, if you don't follow vacum line check

...power break booster, when you loose vacume it will stall out the engine if enought vacume is lost. chk. power break booster. and hose from engine leading to booster for vacume leak, booster is under ...

...vacum, replace the booster. You are correct in the assumption that the power assist is the problem. The brake booster has either failed completely or has a broken vacuum line. Please check that the ...

Power booster went or what? Chk. for vacume to booster, or loss of vacume like a break in vacume hose, do you hear a hissing noise when you step on break peddel. If you don't hear anything chanses are

...vacum line that supplies power to the brakes and a check valve to ensure the vacum stays constant.If vacum system is good then booster is bad..most times the brake fluid leaks out the back ofbrake ...

...power booster or master cylinder how hard is this to change out? Could be booster, chk. vacume from engine to booster, usely when that happends you have lost vacume to the booster, very seldom does ...

vacum line to the power brake booster .start engine and put thumb over the end to check for vacum. should be alot. Also remove plastic check valve and blow on it both ways. should be able to only blow

breke pedal is hard SEE IF YOU HAVE A VACUM BRAKE BOOSTER OR HYDROBOOST. IF IT IS VACUM THEN CHECK FOR VACUM AT BOOSTER. IF IT IS HYDROBOOST CHECK POWER STERRING FLUID AND PUMP OPERATION