1994 Ford F-150

L KOPINESS

MEMBER
1994 FORD F-150
6 CYL
2WD
AUTOMATIC
33,500 MILES

The brake pedel applies itself on startup I suspect the booster as when I remove the vac line it releases you guys ever heard of a booster working backwards

Thursday, April 1st, 2010 AT 12:50 PM

3 Replies

CARADIODOC

MECHANIC
33,729 POSTS

The valve is leaking that lets atmospheric pressure in on the pedal side. You should hear a hiss under the dash by the pedal. This isn't a common failure so a repacement booster from a salvage yard will likely work fine.

Caradiodoc

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Wednesday, March 10th, 2021 AT 12:47 PM

L KOPINESS

MEMBER
2 POSTS

Thanks that is what I suspected.I replaced the unit about 4 years ago with a lifetime warrenty onr but I cant remember if I got it at orileys or auto zone.

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Wednesday, March 10th, 2021 AT 12:47 PM

2 LINSEY

MECHANIC
287 POSTS

Hi L Kopiness,

Well good luck on getting that warrentied and replaced. We're glad we were able to help and we look forward to helping in the future. Please let us know how it all comes out, and again thank you for using 2CarPros. Com.

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Wednesday, March 10th, 2021 AT 12:47 PM