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Johnny U · 08-22-2014, 03:01 PM

Is the truck a 4x4? If it is and it has the electronic shift on the fly (esof) it probably has bad hub seals which allow dirt to enter the vacuum lines and wear out the pump. Like Sean said it should be at least 15" of vacuum. Hope this helps.

08-22-2014, 03:01 PM	#7
Johnny U Junior Member Join Date: Jul 2006 Location: Oakville Ontario Canada Posts: 55 Likes: 0 Liked 0 Times in 0 Posts	Re: 2000 Ford F250 Diesel air cond problems Is the truck a 4x4? If it is and it has the electronic shift on the fly (esof) it probably has bad hub seals which allow dirt to enter the vacuum lines and wear out the pump. Like Sean said it should be at least 15" of vacuum. Hope this helps.