Question about Chevrolet HHR

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I had the front disk brake pads and rotors replaced.Now the pedal goes to the floor if I'm stopped and have to press hard on the pedal.My mechanic adjusted the rear drum brakes twice with no improvement to the pedal.

Posted by scuba05477 on

  • scuba05477 Aug 14, 2009

    My mechanic claims he bled the system the second time I took it in.Might be the master cylinder.

  • scuba05477 Aug 14, 2009

    Brake fluid is full and the system was just bled.

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4 Answers

Anonymous

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Got air in the lines, need to bleed it out. if not you might need a new master cylinder. but since you just had brakes worked on it's most likely air

Posted on Aug 14, 2009

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Anonymous

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Check you fluid brake fluid level, and rebleed the system. that should help it out, sounds like you may have air in the line.hope this helps

Posted on Aug 14, 2009

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Ray Jones

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Try bleeding all ur brakes--if this doesn't help you probably need a master cylinder

Posted on Aug 14, 2009

Jonathan Murray

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Ck backing plate for wet if it's. Wet. Replace what's leaking

Posted on Jun 26, 2015

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1 Answer

1993 buick lesabre changed the front rotars and pads and now the cars brake pedal is so hard to push down to get car to stop. Mechanic has checked both the front and back brakes and they are fine. T


I would jack up a front wheel and see if pushing on the pedal with the engine running will stop the wheel from turning.
You need to know if the pressure is reaching the wheels, or if the pads and rotors are too slick to stop the car.
Usually if the pedal is hard, the booster is not working or the brakes are glazed.
Can you stop the car with the parking brake ? That only uses the rear brakes.
You may need a second opinion from a different shop.

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I changed the front rotors and brake pads once i was done i started the truck and the brake pedal went to he floor and the dash ifo said to service brakes. since than the brakes have been hard and...


It went to the floor because you had to compressed the piston to get it over the new pads and rotors. The brakes need to be pumped up after you replace pads in order for the pistons to come back in contact with the new pads and take up the gap. Pushing the pedal to the floor is never a good idea and a good way to ruin a master cylinder in older vehicles.

As far as the pulsation, have the rotors turned. Make sure the wheels are torqued to the proper spec when you are done (140 lb/ft). Pump up the pedal when you are done and you should have smooth braking.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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Sounds like air is still in the brake lines, the air sound that you hear is the power assist, but the brake pedal needs to be "high and hard".

if the pedal goes to the floor, that is not good. Sometimes, when pumping brakes for bleeding purposes, the master cylinder gets damaged, as the piston goes past it's normal "travel zone" and gets damged on deposits.....

Now, with that being said, if everything was perfect, brakes are typically not as firm after replacement, due to differences in new pads/shoes and old rotors and drums. Pedal to the floor, however, is never okay.

Doc

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Check the pads/rotors to see if they need to be replaced.
Check the brake fluid level. If low it could mean the pads/rotors need to be replaced. If replacing also replace the brake fluid.
Two years probably means you need a brake job.

Otherwise you may have air in the brake lines which you can bleed off.

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You need to replace the master cylinder. If all else is good and the petal goes to the floor, that's really about all it could be.

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