Pressure wont release from right front wheel?

Tiny
BRADSHINN
  • MEMBER
  • 2008 CHEVROLET UPLANDER
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
New rotor, pads, caliper and brake line. After brake seized and super heated. New caliper receives fluid but fluid can't return to reservoir. Other brakes seem fine. Hard pedal when the piston wont release pads on that wheel. Master cylinder seems okay and I would lose ability to build pressure if it was faulty. Yes, have only replaced one flexible brake hose. It is only occurring on the right front wheel which is the one that originally locked up for unknown reason. Caliper piston does release when I apply pressure and open the bleeder valve and it will release when I crack the line at the top of the flexible hose. Can faulty master cylinder prevent fluid coming back from just one front wheel because driver side functions normally? Thank you
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Monday, June 17th, 2019 AT 12:29 PM

5 Replies

Tiny
ROY B
  • EXPERT
Do you mean when you open the bleeder, the caliper does not release?If you do and it releases when you crack the line at the top of the hose, either the hose or the caliper is the issue. The hose failed from collapsing internally. No, the master will not do just one wheel. Roy
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Monday, June 17th, 2019 AT 12:52 PM
Tiny
BRADSHINN
  • MEMBER
System releases from bleeder valve and the end of the flexible hose it is a brand new hose. No visible damage to the metal brake line. When I bleed this brakes I have very good flow. Very confused. Thank you very much.
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Monday, June 17th, 2019 AT 1:00 PM
Tiny
ROY B
  • EXPERT
Good afternoon,

Did you replace just one brake hose?

Did you try opening the bleeder valve and see if the wheels release?

No, the master could still be bad.

https://www.2carpros.com/articles/how-to-replace-a-abs-controller

The ABS could also be the issue if it is not allowing return flow.

Roy Okay, this sounds like the ABS unit itself. It can cause an issue at the one wheel without affecting the other wheels.

Roy
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Monday, June 17th, 2019 AT 1:05 PM
Tiny
BRADSHINN
  • MEMBER
I was afraid you might say that. Lol. It looks like the simple job just got a whole lot worse. I will explore that path. Thank you very much for your help.
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Monday, June 17th, 2019 AT 1:14 PM
Tiny
ROY B
  • EXPERT
You are welcome.

Always glad to help.

Roy
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Monday, June 17th, 2019 AT 1:15 PM

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