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08-20-2014, 01:28 PM
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#1 |
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Senior Member
Join Date: Mar 2006
Posts: 977
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Re: 2000 Ford F250 Diesel air cond problems
The search I found stated the vacuum pump should produce 17-21" of vacuum. If the damper is in defrost is also a sign of not enough vacuum. A cheap hand operated vacuum pump will diagnose a bad hose or damper diaphragm, and could be used to show what the vacuum pump is pulling. What is the brake pedal like?
Sean
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Sean Marconette 84 Mustang 5060 SS/N Last edited by Sean Marconette; 08-20-2014 at 01:32 PM. |
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08-20-2014, 01:33 PM
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#2 |
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VIP Member
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Posts: 3,416
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Re: 2000 Ford F250 Diesel air cond problems
thanx guys--we are gonna replace the pump tonite with a known good pump see if that fixes it---all the hoses look pliable not rotted or chafed etc. Will let u know what it was--FED 387
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08-22-2014, 03:01 PM
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#3 |
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Junior Member
Join Date: Jul 2006
Location: Oakville Ontario Canada
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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.
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08-22-2014, 04:22 PM
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#4 |
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VIP Member
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Re: 2000 Ford F250 Diesel air cond problems
TWO WHEEL drive !!!
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09-03-2014, 01:44 PM
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#5 |
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VIP Member
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Re: 2000 Ford F250 Diesel air cond problems
OK finally got around to replacing the pump with a known good pump--- still sameo sameo still defrost only---pulled the glove box out looked under there nothing looks bad---possibly the "selector" is bsd???---without tearing the whole dash apart anyone got any other suggestions?? Thanx FED 387
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09-03-2014, 02:10 PM
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#6 |
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VIP Member
Join Date: Jun 2006
Posts: 3,416
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Re: 2000 Ford F250 Diesel air cond problems
I just checked and the A/C compressor is also engaged in any position except off-- not matter which position the selector is in EXCEPT off the a/c compressor is running
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09-03-2014, 04:30 PM
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#7 |
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Junior Member
Join Date: Nov 2012
Location: Mechanicsville Va
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Re: 2000 Ford F250 Diesel air cond problems
My 2001 F350 dsl dually had a canister on left side facing motor near ac box on the firewall the bottom of it had a pinhole that caused a leak so ac didn't come out of vents but defroster only= the canister is about the size of a quart bottle with vacuum lines running to it hope this helps bobby
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