brake caliper?

loose caliper new pads and rotors bled system new slide pins and bushing and new caliper wont tighten even with bleeding driver side tight but passger side still loose and vibrates when applied brakes abs brakes 1995 buick regal

6 Answers

  • Pey
    Lv 7
    1 decade ago
    Favorite Answer

    The piston is stuck. Remove the caliper and use a C Clamp to push it back in carefully. Reinstall and try again. If it doesn't work, you will have no choice but to rebuild or replace the caliper. Would think the replace is better for you.

    Brake Caliper Rebuild see first source below.

    On occasion, we can get them to come loose by taking loose the bleeder screw and prying on the piston with a big bar. They will break though.

    You may need to get new calipers up front, if so, bleed the system well after fluid renewal.

  • Anonymous
    5 years ago

    Either with a piston depressing tool or a C-Clamp and block of wood. Best way to do this is to take the lid off of the master cylinder and cover the opening with a rag. Lets the back pressure ease off a little easier. Next, place the pad side of an old break pad against the piston and use the piston depressor to recess the piston. It's easy. It just uses pressure on the back of the caliper and with a screw in system, presses the piston back in. If you don't have one of those, get a C-Clamp and a piece of wood. Press the block of wood against the piston and slowly press the piston back in with the clamp. I doubt it being a 98 it's a worm gear piston but check to be sure. Some calipers (again, I highly doubt it) use a worm gear to resses the piston. Check for a hex nut on the side of the caliper and turn that counter clockwise.

  • 1 decade ago

    Thank you. It sounds like the right side(new caliper) is loose and the left side is grabbing. which is making your wheel speed sensor apply the ABS(pulsing).take the wheels off and see if the pads are touching the rotor. pump the brakes(engine may have to be started, SAFETY FIRST) until they touch, (you may not have gotten all the air out of the piston) Make sure all the parts are correct, you may have to take it apart and start over.

  • 1 decade ago

    Sounds like something mechanically wrong not something with air in the brake system.

    Did you try manually compressing the brake cylinder with a C-clamp?

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  • 1 decade ago

    sounds like air, bleeding order,pass side first then drivers. general rule is the farthest point might have to rotate the bleeder towards the top also good luck

  • 1 decade ago

    when bleeding brakes on passenger side if your getting fluid from it then you have a faulty caliber but if you are not getting fluid then you have a blockage in the line or you need to bleed it more. hope this helps.

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