ABS light on with pulsing brake pedal

CHERYL815

MEMBER
2003 PONTIAC GRAND PRIX
3.8L
V6
RWD
AUTOMATIC
130,000 MILES

I crashed leaving both front tires flat, the rims broken and tire flattened, after repairing and having all tire in working condition I have a pulsing brake pedal and abs light is on (abs was on after accident) It did not pulse until all four tire were fixed what could be the reason is it safe to drive and did I break the abs or possibly loosen something or unhook something when I damaged the two front tires. The car also has a slight wobble when driving simulair to a sway.

Monday, January 26th, 2015 AT 4:37 PM

1 Reply

CARADIODOC

MECHANIC
34,330 POSTS

This should be pretty easy for your mechanic to identify. The typical causes are a bent wheel, bent hub, warped brake rotor, rust or other debris stuck between the wheel and rotor or the rotor and hub, and a broken belt in one of the tires. In severe cases it can be caused by not using a click-type torque wrench on the lug nuts.

Start by running the car in gear with the wheels off the ground. Watch the tread for signs of squirming from side to side or a bulge hopping up and down. Next, watch the edge of the wheel where the balancing weights go. That should not be moving side-to-side as the wheel goes around.

Was the alignment checked after the parts were replaced?

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Monday, March 29th, 2021 AT 9:22 AM