Front passenger brake is pulsing and there is no abs light on in my 1997 pontiac grand prix.I believe it might be abs sensor but don't know where to find it in wheel assembly.
A front brake pulsing with no ABS light is a rotor that is no longer true i.e warped. Pull off the tire and rotate the rotor. Hold a straight edge (ruler) across the outside of the rotor as your rotating the rotor. You will note that it changes distance on the straight edge / ruler as it rotates. (in out wobble) A good way to test for an out of true rotor is to drive at about 45 miles and hour and really stand on the brakes (do not lock them up) If the steering wheel and or brake pedal pulsate... you most likely have a rotor problem. If your rotor has never been "turned" it is probably time to do so.
The ABS sensor is behind the rotor on the lower control arm pointed outward toward the rotor with a flat button face. You can not see the button face with the rotor installed. If the sensor is bad you will have an ABS light. I think your troubleshooting the wrong problem. i.e rotor vs your current focus of the ABS sensor.
I would like some feed back on the running dynamic on the road brake test.
Thanks for choosing FixYa,
Jun 06, 2011 |
1997 Pontiac Grand Prix