Brake failure my pedal is on the floor brakes not stopping the truck?

Tiny
POIPOIPOUNDER
  • MEMBER
  • 1999 FORD F-150
  • 2.0L
  • V8
  • 2WD
  • MANUAL
  • 100,000 MILES
Brake pedal goes to floor. Pumping doesn't work. Cylinder is full and not leaking. Brake Masters said brake pads good and no leaks.
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Tuesday, June 18th, 2019 AT 11:05 AM

8 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon,

If the fluid is good and you have no pedal, most likely the master cylinder has failed.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

If you open a bleeder, does fluid come out with the pedal depressed?

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

Roy
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
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  • MEMBER
I'm not able to do that. I'm not trusting Brake Masters answer because I can't afford to replace entire or rebuilt ABS as msgr is suggesting. Or he said bring title to him so he can dispose of truck.
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
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  • MEMBER
Thank you for quick reply. I'm doing some research. He says brake fluid is contaminated but the test he showed me, anyone could do as a ruse.
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
ASEMASTER6371
  • EXPERT
Sounds like he wants the truck.

I would replace the master cylinder and bleed the lines of all air.

Is the gasket under the master cylinder swelled up?

Roy
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
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  • MEMBER
A bit.
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
ASEMASTER6371
  • EXPERT
Good chance there is a petroleum product in the fluid. It has failed the seals in the master and possibly the calipers and the wheel cylinders.

Roy
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
POIPOIPOUNDER
  • MEMBER
Thanks Roy! I went to a reliable salvage guy yesterday and he has several ABS for $100.00 vs $450.00 for rebuilt acquired by brake masters. He also has a good mechanic.
Thank you so much for your continued assistance and 'reassurance'. Have a blessed day!
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Thursday, September 24th, 2020 AT 11:41 AM
Tiny
ASEMASTER6371
  • EXPERT
You are welcome.

Always glad to help.

Ry
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Thursday, September 24th, 2020 AT 11:41 AM

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