Question about 2006 Ford F-250 Super Duty
Similar issue with my friends Dodge. Its a safety default to ensure the driver can see (via defroster) in the event the electrical has an issue. This ocurres when someone works on the vehicle w/o disconnecting the battery. Will need re-flashed by the dealer or someone in the know.
Posted on Sep 30, 2009
I have a 2006 f-250 diesel mine do the same thing if your 4x4 does not to the problem might the a switch it is located by the battery on the right side on the fender. also unplug the two vaccum lines and switch the lines on to the 4x4 and switch them around heater box and see if your blows like it shoud if so you need to replace that switch it is about 80.00 at ford. I hope that works for you
Posted on Aug 06, 2011
Pressure test each vaccum line
Posted on Sep 23, 2009
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Posted on Jan 02, 2017
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