1994 Ford F-150 Power Booster

Tiny
SEKJR
  • MEMBER
  • 1994 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 171,000 MILES
How can you repair a power brake booster. IS it repairable.

I press on the brake pedal, and the brake pedal returns no problem.
With engine running, the brake pedal does not return all the way. And the brakes are still slightly on. I have to pull the pedal back.
Saturday, December 19th, 2009 AT 6:20 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
To check the vacuum booster, pump the brake pedal with the engine off until you've bled off all the vacuum from the unit. Then hold the pedal down and start the engine. You should feel the pedal depress slightly as engine vacuum enters the booster and pulls on the diaphragm. No change? Then check the vacuum hose connection and engine vacuum. If okay, the problem is in the booster and the booster needs to be replaced
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Wednesday, March 10th, 2021 AT 12:47 PM

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