Brake problem
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New User
Joined: Jan 2006
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Brake problem
I have a 97 F-250 7.3 When I start it up in the mornings the brake light comes on. When I head down the street the brakes are not good, but as soon as I run up the rpm's the light goes off and the brakes are fine. Is it my power booster? It also does it when driving and stopping at lights when I idle down but goes off when run at higher rpm's
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
"Not good" ==> hard pedal? If so, this is sounding like a vacuum pump issue. Vac pump is weak, below "margin" at idle, but adequate when revved up. Either that or the belt is loose.
Any other belt-accessory-related problems (charging, cooling, power steering, etc.)?
Any other belt-accessory-related problems (charging, cooling, power steering, etc.)?
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