Brake booster going bad?
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Logistics Pro
Joined: Jun 2010
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From: East KY
Brake booster going bad?
Hey guys. My 97 F-150 (4.6 L) has developed what sounds like a vacuum leak under the driver's side dash somewhere above the pedals. I can't see anything obvious. It changes sound with various positions of the brake pedal, and I can make it stop with hard acceleration for a few seconds. The brake pedal feels the same. I'm assuming the problem is probably my brake booster, right? Or should I be looking elsewhere? If so, how hard is it to replace?
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Joined: May 2005
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Lead Driver
Joined: Dec 2012
Posts: 7,877
Likes: 49
From: Tennessee
Sounds like the booster . Not hard to replace . Block off the vac line to the booster , if noise goes away , bad booster . If no change , look further . 2 bolts on master cyl and 4 bolts holding booster to firewall . Brake rod to peddle assy clip . Easy job .
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