ABS front brake loc up

[BillDriscoll]

OK, I just put new disc brake pads on the fron of my truck. Put every thing back together , went down the road hit the brakes softly a few time to make sure they worked everything fine. Went into a parking lot got up to 45, hit the brakes, they had and no pulse, the left front locked up... . any ideas. The rotors are fine according to the brake/tire shop that rotated my tires... .....

 

[jelag]

You've got something wrong with your pad installation... typically when the ABS kicks in... it will pulse the wheel. . in other words it will release the locked brake and as the ABS sensor sees a faster turning wheel over the other wheels it will reapply the brakes... if that wheel or another wheel starts to slide, (skid) turns at a slower rate, it will than pulse the brakes again...

Did you open the bleeder before you installed the pads... or push the dirt back to the master cylinder?

Did you inspect the boots on the pistons for tears and or damage that allows dirt into the piston that allows it to lock up?

Did you find one pad, on one caliper that was much thinner than the other 3?

Did you bleed the brakes until the brake fluid run clear, and also bleed the rear axle as well?

Did you clear any burrs on the mounting surfaces, and lube those surfaces on assembly?

Did you have the rotor off, to either replace it or machine it ?

With these answers I can ask a couple more questions and help you figure out what's wrong...