I have a 2001 ram offroader. Bought her new, she's got 179,000 on her now. New shocks at 80,000, along with airbags and sway bar out back. New brake lines at 100,000, along with SS flex lines and crossdrilled rotors. Rebuilt trans & transfer case at 135,000. New steering componets at 145,000. New frt shocks at 150,000.
**Problem is, as I stop from about 35mph, the truck seems to viberate, not side to side, but front to back. As if the pressure is not relieving from the rear brakes. Park it on Friday, drive it Monday and the problem is not there until I start braking. Maybe after 4 or 5 stop signs/traffic lights, I can feel the rear brakes start to grab at really slow speeds, 5/10 mph. In gravel, the rear brakes grab.
*To try to solve the issue, I replaced frt rotors and calipers, rear drums and everything inside them. All new brake lines again, except front SS flex lines. Combination valve & master cylinder. I also replaced the rear SS flex line for fear of it acting as a slow bleeding check valve if innerds fell apart. Still the problem persist. This truck has rear antilock brakes controlled by a sensor over the pinion.
I don't feel any vibration in the peddle like a typical ABS buzz.
Q- Could it be the anti lock solinoid module acting as a check valve, not allowing the relief the rear brakes need?Only the rear brake line from master cylinder runs though this ABS unit.
Q- Can I by-pass the ABS to test this?
Q-Could it be suspension, tires out of balance?
Any help would be appreciated, Thanks,