my 2004 Mercury Marquis only blows hot air no matter what. any setting, any position

Asked by Michael Apr 24, 2014 at 12:05 PM about the 2004 Mercury Grand Marquis GS

Question type: Maintenance & Repair

Just blows hot air usually out the heater ducts or defroster vents. has the dual zone climate control wish I didn't now! but no matter what I set it to.  It blows hot

1 Answer
58,615

Tracy answered 10 years ago

The Blend Air Door Actuator has failed. I probably change 30 a year on our fleet of Crown Vics. Unfortunately, it's very difficult to get to. It's located on top of the hearer/AC plenum and to change it properly, the dash has to come out. There is a short-cut method of working through the glove box and breaking a few plastic components but it isn't the right way to do things. Either way - big job.

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