Heater stopped working? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 11-01-2010, 04:29 AM Thread Starter
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Heater stopped working?

Last weekend I put new head gaskets in my 2007 Ford F-350 and after that for some unknown reason my F-350 heater stopped working. Can't figure out the reason behind this problem. Fan is blowing, but just not hot. Is there anything I hooked up wrong? Can anyone point me in the right direction and shed some lights on this topic? Is there any specific thing I need to check?

Any help will be greatly appreciated.
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post #2 of 4 Old 11-01-2010, 06:02 AM
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check your coolant

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post #3 of 4 Old 11-01-2010, 07:03 AM
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There's a heat hose that is black that runs next to your alternator, into a rubber hose that goes into your heater core. About midway between the firewall and alternator there should be a vaccum valve that could have gone bad.

Matt at Gearhead,Doug at GoGo,Dave at Diesel Innovations,Ryan at Full Force Diesel,Eric at Innovative. Adam at First Coast

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post #4 of 4 Old 11-03-2010, 06:18 AM
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Similar to what "RescueF250" is talking about mine has a electrical line that rests just about on top of the heater control valve that would block it from opening and/or closing. Here is another discussion about the Heater Control Valve with pictures. Control Valve after Service

Let us know what you find for others to learn by.

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