ABS Problem with my 2000 Cavalier
Mileage = 171000/km
Engine size = 2.2l
dash lights = no
GM Computer codes = no
work done to repair this problem = replaced,brake lines,pads rotors and shoes
GM tech = jk
question = getting a clicking noise when you are stopping,sounds like abs motor. Pedal is ok
(hard) no air in lines.
GM Tech JK:
Is this noise related to vehicle speed or is it a steady noise. Does it sound like it is from the
front brakes, rear brakes, or under the dash?
VISITOR:
the noise is only there when your foot is on the pedal slowing down,,just before the car
comes to a full stop. You hear a clicking sound,in the front of the dash ,and feel a pulsing on
the brake pedal. It happens going forward and reverse. Only get it like I said just before the
car comes to a stop.
GM Tech JK:
This sounds like a possible "low speed ABS activation"This usually is caused by a faulty
front ABS wheel speed sensor, or the wiring to one of those sensors. This is really hard to
catch which side has the problem, even with a scanner.I would suggest unplugging the left
and right harness and look for water in the connectors, or green corrosion. Also pull on
each of the 2 wires in each sides harness to check for a broken wire. If OK, then I would
suspect a speed sensor.
Mileage = 171000/km
Engine size = 2.2l
dash lights = no
GM Computer codes = no
work done to repair this problem = replaced,brake lines,pads rotors and shoes
GM tech = jk
question = getting a clicking noise when you are stopping,sounds like abs motor. Pedal is ok
(hard) no air in lines.
GM Tech JK:
Is this noise related to vehicle speed or is it a steady noise. Does it sound like it is from the
front brakes, rear brakes, or under the dash?
VISITOR:
the noise is only there when your foot is on the pedal slowing down,,just before the car
comes to a full stop. You hear a clicking sound,in the front of the dash ,and feel a pulsing on
the brake pedal. It happens going forward and reverse. Only get it like I said just before the
car comes to a stop.
GM Tech JK:
This sounds like a possible "low speed ABS activation"This usually is caused by a faulty
front ABS wheel speed sensor, or the wiring to one of those sensors. This is really hard to
catch which side has the problem, even with a scanner.I would suggest unplugging the left
and right harness and look for water in the connectors, or green corrosion. Also pull on
each of the 2 wires in each sides harness to check for a broken wire. If OK, then I would
suspect a speed sensor.
Anti-lock brakes are designed to prevent skidding and help drivers maintain steering
control during an emergency stopping situation. In cars equipped with conventional
brakes, the driver pumps the brakes, whereas in cars equipped with four-wheel ABS, the
driver keeps a firm foot on the brake allowing the system to rapidly and automatically pump
the brakes. Because the wheels don't lock up, drivers have the ability to steer around
hazards if they are unable to stop in time.
When the braking force created by the driver is greater than the tire can handle, the wheel
can lock up. Locking wheels can create vehicle instability problems and prevent steering
around obstacles in the road. Stopping distance on many slippery surfaces will also
increase with locked wheels. Four-wheel ABS prevents wheel lock-up in situations in which
the wheels might normally lock, such as on slippery roads.
control during an emergency stopping situation. In cars equipped with conventional
brakes, the driver pumps the brakes, whereas in cars equipped with four-wheel ABS, the
driver keeps a firm foot on the brake allowing the system to rapidly and automatically pump
the brakes. Because the wheels don't lock up, drivers have the ability to steer around
hazards if they are unable to stop in time.
When the braking force created by the driver is greater than the tire can handle, the wheel
can lock up. Locking wheels can create vehicle instability problems and prevent steering
around obstacles in the road. Stopping distance on many slippery surfaces will also
increase with locked wheels. Four-wheel ABS prevents wheel lock-up in situations in which
the wheels might normally lock, such as on slippery roads.
