Question about 1997 Ford Econoline

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97 Ford Econoline air conditioning and vent settings blowing hot

It doesn't matter what setting the switch is on, my entire heating and cooling system blows hot!

Thus applies to a/c max and norm, vent, defrost and so on. Good job it's winter!

Any guidance would be greatly appreciated. Thank you!

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  • nominis May 11, 2010

    Steps to get a better understanding.

    1 Does the compressor work?

    2 Is the AC system charged with coolant?

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I know from experience that if the coolant is to low ( not just the freon levels in the compresor but the antifreeze/coolant level as well) the AC system will not cool and will blow hot. Check the coolant Antifreeze and freon levels, even with the Coolant being a little low my 1998 Ford E150 Van will blow hot. After you have ruled out of these possibilities and the chance it is the thermostat most likely the problem is what Ford calls the "Flap" it controls the air flow through the vent system when you switch from Heat to AC. When the Flap is working it closes off one systems air flow so as to not interfere with the current climate selection.

Posted on Apr 17, 2009

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99 ford ecoline the air on the back dont blow only onthe front

Posted on Sep 19, 2009

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Posted on Jan 02, 2017

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