How do i know if my blend door on a 2008 grand marquis is working right?
I have a 2008 grand marquis . i replaced my blend
door but i still have no heater, ac work just fine and
blows hard. Can some one help me know whats
I have a 1993 crown Vic and my car doing the same thing
With the car on but not started, have the heater powered off. Press floor and off at the same time, then quickly release and press auto (within 2 seconds). This will put it into self-test mode. After it finishes, it will give you codes. Those tell any problems you might have. 24 & 25 are common blend door issue codes. If you get those, your blend door stuck. Pressing defrost will end the test.
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