For my 95 G20 Chevy van: ABS light stays on, and, despite new rear shoes, turned rotors and rebuilt calipers, the van always pulls hard right upon braking: thanks for advice
You actually have two separate problems. The brake pull to the right is indicating the left side brake is not working properly. You will want to remove the left front wheel, collapse the caliper piston and make sure the caliper is floating freely on its mounts.
With the piston collapsed you should be able to slide the caliper inboard and outboard of the rotor. If not, you will want to remove the attachment pins, clean and lubricate the pins. If they are grooved or worn you will have to replace them.
The second issue of the ABS light is indicating the system has detected an electrical sensing or control problem. Take the vehicle to your local Auto Zone or Advance Auto and ask them to scan the vehicle for trouble codes. They will scan it for you at no charge.
Chances are you will find a wheel speed sensor problem at one of the wheels.
Write the codes down and respond back, we can start diagnosing the problem,
Good luck, let me know.
Regards,
Im guessing you have a problem with one of the abs sensors...probably the front-left wheel sensor. the way they work is they detect when a tire is locking up faster then the others when the brakes are applied. if a tire locks, then the brakes on that tire are quickly released then re-applied, all in a very short amount of time. the sensor may be defective, and sending the cars computer a false signal, making the brakes on that side release a bit, while maintaining normal braking on the opposite side. thats most likely whats making your car pull. also, the abs light will only come on when there is an electrical problem with the abs system. so make sure todo a visual inspection of the wires for the sensors as well.
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