Question about 2007 Chevrolet Cobalt Coupe

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My girlfriend put powersteering flud in the brakes and now the calipers stick. i know cause i replaced pads and found the uneven ware and the car shakes after 10miles. the calipers look good i was wondering if i replaced the lines it would repaire it.also we flushed the brakes the next day.

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  • Jeffrey Turcotte
    Jeffrey Turcotte Oct 04, 2010

    when you flushed the brakes, did you collapse the caliper pistons? I don't think you have to replace the lines as long as you flushed them well.

  • nicole_2405 Oct 04, 2010

    well the brake cap gasket was all swelled up. they told me they wouldnt be able to get it all out and it just got worse the longer its been. when i replaced the pads a couple of months ago the calibers seemed ok. im replacing the lines today how do i know if i callapsed the pistons. also the temp gauge works sometimes reads temp then wont read. is thier air in my radiator thats wat i was told and how would i bleed the air out



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When you take the lines off the calipers, put a small screwdriver between the front brake rotors and the back pad and gently pry the piston back into the caliper. use a larger screwdriver once it starts to compress. All of the fluid should come out the back of the caliper. Catch it in a pan. Once both calipers are collapsed, hook the brake lines on the calipers and gravity bleed the lines thru the caliper bleeders. make sure to keep the reservoir full while bleeding. After bleeding, you will need to pump the brake pedal to bring the pads back to the rotors. refill the reservoir after doing that.

On the temp gage, open the radiotor cap, if you have one. run the engine until it is hot and the thermostat opens--you should be able to see coolant flowing inside the radiator. Fill the radiator and keep it full if it goes down any. I think it should bleed itself like this, but look around for any bleed ports either on top of where the hoses connect to the engine or else they might be along the hoses. There is no mention of coolant bleed ports in the manual.

If this doesn't fix it, get back to me.

Posted on Oct 04, 2010

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