Question about 2000 Mercury Grand Marquis

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Grand marquis air conditioning

I need help. My air conditioner is blowing out hot air and sounds like a door is opening and closing under the dashboard.

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  • 78 Answers

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

ancdlm
  • 58 Answers

SOURCE: Check Air Suspension for 2000 Mercury Grand Marquis

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.
http://www.strutmasters.com/mercury-suspension-parts-s/25.htm

I hope I was of some help
Good Luck!!!

Posted on May 06, 2009

foskorider
  • 79 Answers

SOURCE: GRAN MARQUIS AC PROBLEM

removal of the dash is the easiest way of reparing the ac system other than the under hood parts

Posted on May 19, 2009

roniecon
  • 6826 Answers

SOURCE: i have a 2003 grand marquis the air conditioning

nope but ya can look in junk yard and save lots of mula

Posted on Jul 05, 2009

ginko
  • 19396 Answers

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.

Regards.


Posted on Nov 18, 2009

  • 1 Answer

SOURCE: 2004 mercury mountaineer.heat problem When turning

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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2 Answers

My air condition only blows out cold air not hot


Turn your air conditioner OFF and turn your heater ON. Air conditioners were designed to blow out one temperature of air... COLD.

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If the hot air only comes from the defrost it is probably the Control Head. Can be rebuilt for 100 or replaced quick for $235. The Blend door is expensive because of the labor to get to it. Alot of places will diagnose your problems for $25 to $85. They can check the vacum pressure from under the dash and let you know what is wrong. https://www.youtube.com/watch?v=hAqE-oYnvlQ

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Yes there is a door, and yes it could be stuck.
If one of the ac lines is cold and the other is hot, I would have someone check the blend doors under the dash.

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Sounds like ??
If the compressor is running and the system is full of freon, you may have a blend door problem under the dash. The blend door directs air flow thru the heater core and evaporator core depending on the temp setting on the dash.

Jul 24, 2012 | 2000 Mercury Grand Marquis

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Jul 14, 2012 | Cars & Trucks

1 Answer

I have a 2002 mercury grand marquis, and the air condition only blows through the defrost not the vent please help.


The vacuum-actuated door flap not functioning from either vacuum leak(worn out actuator, bad hose or switch) or it is jammed open with a pen-like object that fell into the ductwork(all of which is under the dash)

Aug 10, 2010 | 2003 Mercury Grand Marquis

1 Answer

The heater in our car is not blowing hot air. It


Check the heater hoses under the hood first to see if they are hot. if they are, there is a temperature control actuator on the top of the heater box. the motors go bad, and the temp door does not move. The motor is hard to get to but if you open the glove box it is to the left, almost behind the radio.

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this problem is caused by a defective air temp control blend door motor, to replace this part the dash must be removed.

Mar 23, 2009 | 1996 Mercury Grand Marquis

1 Answer

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if the heater hoses are hot on both sides(indicating the engine is at full temp) and you feel the heat controller in dash is working properly, i would suggest disconnecting both heater hoses and backflush heater core with decent amount of pressure. if this improves condition but does not solve completely, heater core replacement is necessary.

Nov 15, 2008 | 2001 Mercury Grand Marquis

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