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Message: [QUOTE="jstephenspence, post: 1042100, member: 3282"] My 97 f-250 is having brake vaccum issues. I pulled the hose off of the brake booster and run a vaccum test and it seems to be good at about 24. My problem is when I shut the truck off it loses all vaccum in about 4 seconds. Does this sound like a vaccum pump going bad or maybe a leak in the hoses. I inspected the hoses and they seem to be fine. I get the default defrost and brake pedal issues like there is no vaccum upon start. After the vaccum builds up everything is fine until I shut it off again. [/QUOTE]

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