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Tiny
KCDONJUAN
  • MEMBER
  • 2001 MITSUBISHI MIRAGE
  • 200,000 MILES
My brake calipers won't release. I changed the brake pads, rotors, and calipers already. The brakes are still real squishy(even after bleeding the calipers several times)and after test driving you can hear them grinding. Was wondering if it might be the master cylinder or the brake booster
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Tuesday, January 17th, 2012 AT 1:59 AM

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Tiny
PROTECH1980
  • EXPERT
Need just a little more info, So the brakes are stuck on? Which brakes are stuck on? Why were the brakes replaced in the first place? Did this problem start after brake replacement? What calipers were replaced? Did you get the calipers on the right side? Look at the calipers, make sure the bleeders are above the brake hose on the calipers, if they are below you have the calipers on the wrong side, making bleeding impossible. Let me know, As for the grinding did it do this before brake replacement?
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Tuesday, January 17th, 2012 AT 2:43 AM
Tiny
KCDONJUAN
  • MEMBER
Yes the brakes are front brakes are stuck on. The car sat for two years. I replaced the hub and bearings on one side(the other had already been replaced)drove it to get inspected and you could hear it grinding.I then rebuilt the calipers that were on it already. That did not work so I went ahead and changed the calipers and decided to change the rotors and pads since they were not that expensive. Same problem. The calipers are on the right sides cause I made sure I kept the old ones on the sides they came off but the new calipers had R & L on them also.I bled the calipers and noticed that the fluid was a shade of brown but bled them til the clear fluid came out
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Tuesday, January 17th, 2012 AT 12:56 PM
Tiny
KHLOW2008
  • EXPERT
Check the master cylinder. It could be stuck partially and not returning fully. This would not allow fluids to return and after a short period of driving, the brakes would seize.

Ensure there is sufficient free travel between brake pedal and booster pushrod.

One other thing that can cause the front brakes to seize would be bad flexible hoses. They can go bad and only allow fluids to travel one way.
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Tuesday, January 17th, 2012 AT 1:59 PM
Tiny
KCDONJUAN
  • MEMBER
Thank you, I will try that and let you know the results.
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Tuesday, January 17th, 2012 AT 9:53 PM

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