Question about 2000 Mercury Grand Marquis
I need help. My air conditioner is blowing out hot air and sounds like a door is opening and closing under the dashboard.
It could be as simple as a bad vacumn line. Those doors are controlled by vacumn from the engine. The engine heat sometimes deteriorate the rubber and they crack or fall off. See if you can find a bad or broken vacumn line .....it will be going toward the firewall.
Posted on May 13, 2014
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Posted on Jan 02, 2017
It sounds to me like your compressor got killed. What probably happened is that the airbag got a hole or tiny crack in it so the compressor has to work extra hard because it is like blowing up a balloon with a hole in it. Therefor the airbag killed the compressor. I would recommend going to strutmasters.com and taking a look at our conversion kits. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. I added the link below so you can check it out.
I hope I was of some help
Posted on May 06, 2009
SOURCE: 2003 mercury grand marquis LS
The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.
You will need to test and replace the blend door actuator.
To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.
The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.
Posted on Nov 18, 2009
2004 mercury mountaineer.heat problem
When turning ac knob to heat clicking sound like door opening and closing repeatedly sounds and air blows cold instead of hot.
Posted on Nov 11, 2010
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