1994 Brake Problem Please Help
Thread Starter
3rd Gear
Joined: Sep 2006
Posts: 3
Likes: 0
From: Bonney Lake Washington
1994 Brake Problem Please Help
Hello all. Well I'm miffed! I have been having a severe brake problem and am at a loss for the fix. I can drive my car for a good day or so and then all of a sudden while driving I totally lose my brake pedal....sinks to the floor (scary stuff). It will stay like that til the cars sits a while turned off then the pedal returns back to normal again. I have replaced with new parts the master cylinder and brake booster and no help. My pedal when working does seem a bit tight for power brakes but still does a good job stopping if that is any help with the diagnosis. This last time I got a dash brake warning light and when the car was off and the brakes returned the light was off again. I am at a loss to where the problem lies...any suggestions would be greatly appreciated.
Steve
PS could this be a possible heat related problem?
Steve
PS could this be a possible heat related problem?
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
If you hadn't already replaced the master cyclinder, that is what I would suggest is the problem.
Did it do the exactly same thing before new master cylinder?
What brand master cylinder and was it new or rebuilt?
Any chance it is a bad/defective master cylinder?
What brand/grade brake fluid? If not DOT 3, might have damaged the ABS unit.
Have the brakes been bleed and bleed properly (FSM 5-10)? Was the ABS unit bleed (master cylinder prime pipe)? Was it in the correct order which is critical to the valving within the ABS unit (rr, lr, rf, lf).
Have you checked for any ABS error codes?
Might the ABS unit be failing?
Did it do the exactly same thing before new master cylinder?
What brand master cylinder and was it new or rebuilt?
Any chance it is a bad/defective master cylinder?
What brand/grade brake fluid? If not DOT 3, might have damaged the ABS unit.
Have the brakes been bleed and bleed properly (FSM 5-10)? Was the ABS unit bleed (master cylinder prime pipe)? Was it in the correct order which is critical to the valving within the ABS unit (rr, lr, rf, lf).
Have you checked for any ABS error codes?
Might the ABS unit be failing?
