If there's a tug or wobble in the steering wheel noticed more at lower speeds, suspect a broken belt in a front tire. If you feel a sideways wobble in the seat, suspect a broken tire belt in the rear.
If it's only felt in the brake pedal, a rear brake drum could be warped. If the brake pedal also pulses up and down against your foot, a drum could be out-of-round or a front brake rotor could be warped.
The all-wheel-drive viscous coupling rarely causes a problem. Even if it was binding, you'd never know it while driving straight ahead because the front and rear wheels would be turning at the same speed. It would just spin freely with the drive shaft.
The best approach is to have an inspection performed at a tire and alignment shop. They will test drive it first, then based on their observations, they'll know where to look.
Wednesday, April 18th, 2012 AT 12:26 AM