Brakes sink to the floor checked for brake fluid on wheels no leaks replaced brake module but I still have the same problem can you help 1991 chev S-10

Asked by Nov 28, 2014 at 05:09 PM about the 1991 Chevrolet S-10 Blazer 2 Dr STD SUV

Question type: Maintenance & Repair

6 Answers

5,615

Brake master cylinder seals gone would be my guess

3 of 3 people found this helpful.

No sign its new M/C

5,615

If it's new, was it bled properly to get all the air out of it prior to installation (bench bled) or right after installation? After it was installed, was each individual brake, starting from the passenger rear bled off?

1 of 1 people found this helpful.
Best Answer Mark helpful
5,615

You may just have a lot of air in the system. Good luck

Yes that was put in properly and everything was checked properly there is no air in the system I think I need to reset the module or something

71,725

You may have a defective master cylinder. I've had that happen. If the brake pedal sliowly sinks to the floor under steady pressure the master cylinder is leaking internally. HTH. -Jim

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