OneofMany
Well-Known Member
- Joined
- December 21, 2012
- Messages
- 225
- Reaction score
- 5
- City, State
- Georgia Mountains- Talullah Falls
- Year, Model & Trim Level
- 94 expl 4x4
RR brake locks up driving me nuts. I have replaced the brake shoes all the way around, front calipers and rotors, LF brake line thinking if there was a restriction in the LF, the RR would get more pressure leading to my problem- but no result.
I have checked the parking brake and it moves really well, wheel cylinders are not leaking. It has 4wabs that quit working in the past year, but i doubt that is the cause since the 4wabs was working but coming on constantly due to the RR lock up. The problem is worst with cold brakes. A brake imbalance is evident when driving at speed and stepping on the brake causes a bit of a right-left pull. It feels like it first pulls in one direction, then to the other, then evens out. I cant tell which direction it pulls in 1st, its too quick. RR brake shoe wearing more than left. Drum looks good. I live in the mountains, so I do see heavy wear on brakes. I am thinking there is a restriction, maybe in the proportioning valve. Maybe in the ABS unit. Abs light stays on but no brake warning light.
I have checked the parking brake and it moves really well, wheel cylinders are not leaking. It has 4wabs that quit working in the past year, but i doubt that is the cause since the 4wabs was working but coming on constantly due to the RR lock up. The problem is worst with cold brakes. A brake imbalance is evident when driving at speed and stepping on the brake causes a bit of a right-left pull. It feels like it first pulls in one direction, then to the other, then evens out. I cant tell which direction it pulls in 1st, its too quick. RR brake shoe wearing more than left. Drum looks good. I live in the mountains, so I do see heavy wear on brakes. I am thinking there is a restriction, maybe in the proportioning valve. Maybe in the ABS unit. Abs light stays on but no brake warning light.
