no brakes

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Dec 31, 2010 | 04:21 PM

dougshop

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no brakes

I drive a f250 powerstroke 1997 and suddenly I went to stop and it felt like the truck had died but it was still running. I had to press really hard to come to a complete stop. The brake pads are in good shape and the fluid is full. Just feels like no power brakes. what do i check next?

Dec 31, 2010 | 05:16 PM

bayou barataria

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Your vaccuum pump is bad. It should be a belt driven thing like an a/c compressor.

Dec 31, 2010 | 05:22 PM

gearloose1

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Is that a vac pump or a hydro boost?

Either case.. check one or the other.

Dec 31, 2010 | 05:23 PM

dougshop

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many thanks

Thank you for the info. I had a feeling it could be that diaphram in the vac but thought there might be a trick to testing it before i tear into it.

Dec 31, 2010 | 06:14 PM

bayou barataria

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Nope, vaccuum pump I had two fail on my 2005 6.0.

Dec 31, 2010 | 10:04 PM

krewat

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Shouldn't that be hydro-boost? Especially the 6.0, bayou...

Dec 31, 2010 | 10:08 PM

cparks

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From: Linden USA

My 05 F250 6.0 has a hydro boost with the power steering pump running the brake booster. Our 96 E350 van with 7.3 has vacuum pump, so I think it would be vacuum on that one.

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Jan 1, 2011 | 09:22 PM

bayou barataria

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Nope, my 6.0 had a vaccuum pump, I had to pay for a new one twice. The first time it failed I was going 75 mph on the highway and went to step on the brakes and there were none, I had to stand on the brake pedal with all my weight and still could barley stop, it went out with no warning. P.S. the vaccuum pump is not covered on the deisel engine warranty, they made me pay for it with only 30,000 miles on the truck.