how do I replace the BlendAire actuator on my 2004 Grand Marquis... It only blows hot air. Is it possible to move door to cold side only and block it to have cooling & no heating???

60

Asked by Feb 09, 2013 at 09:45 AM about the 2004 Mercury Grand Marquis LS Ultimate

Question type: Maintenance & Repair

Unit stays on hot side only and checks out to be actuator problem... Appears to be very labor intensive to replace... Would like to block it to always be on cool side as we live where heater is not needed...

5 Answers

The blend door is a function of the engine. It opens up when operating temperature is reached. It's only purpose in life is to let preheated air be used, from the stove kit on your exhaust manifold. Why this should be of concern to you, not certian. if your vehicle is taking to long to come up to operating temerature, the blend door need to be looked at. I'd concern myself with the stove kit and connecting pipe, more so than the blend door. if you've got bad heat, would look to the thermostat being stuck open first.

7 out of 7 people think this is helpful.
60

We are talking about Automatic Temp. Control inside vehicle. 2004 Marquis doe's not have heat stove on X manifold...

6 out of 6 people think this is helpful.

Okay then, we must ask why aren't the signals to open getting through. If you put a new one in, the same result~ if it's tubing that fell off or is cracked, inspect. If you've got a suction instrument, a turkey baster might work, to actuate manually, then inspect, you can see if this unit is bad, rather than the thing what gives it instruction.

3 out of 3 people think this is helpful.
110

http://diy-auto-repair.wonderhowto.com/how-to/fix-blend-door-actuator-motor-99-mercury-grand-marquis-396512/

11 out of 11 people think this is helpful.
60

I had the same problem years ago on my 1996 Marquis...couldn't afford the dealership price so I just turned off the A/C....until...I had to change out the battery. Changing the battery made the blend door actuator cancel a code and it began to pop once in a while and so I turned on the a/c...it worked! Now, if I hit a bump or (it has worked for a few years in a/c only) jolt the door in some way it will turn to heat only....I just get out and take the neg off the battery for a few moments and then attach it back...the a/c will then work again!

6 out of 6 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Why does my heater fan only blow cold air? 13 answers

    When I turn the heat on in my car it only blows cold air. The AC works just fine and the fan does blow at full power but no matter how long the car has been running for the air still remains extremely...

    2001 Mercury Grand Marquis

    -

    Maintenance & Repair

  • Mercury Grand Marquis 2008 no heat in cabin 1 answer

    Checked all the basics. Hose from engine to radiator gets hot. Two smaller diameter hoses at the passenger side that are at the fire wall are hot. Switch for ac or heat ok, vaccuum door moves. Ok air ...

    2008 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • Why does my 2005 Marquis blow high heat no matter what setting I have it on? 15 answers

    My 2005 Mercury Grand Marquis had a clicking sound with the heater blowing and then it quit but now I only get really hot air blowing out. Even when I put it on A/C, Max A/C, Vent, etc. Also, changi...

    2005 Mercury Grand Marquis

    -

    Maintenance & Repair

  • 2004 Mercury Grand Marquis 3 answers

    The air blower will not trun off when the "OFF", button is pushed. Previously the blend door actuator, I was told is the problem. The car hvac was blowing hot air on ac mode. I was told to discon...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

  • Passenger side only blows heat 132 answers

    We bought a 2011 dodge caravan mainstreet used. Right away we noticed that the passenger side and the rear vents only blow heat. The driver side will blow cool air or AC, but the passenger and rear bl...

    2007 Dodge Caravan SXT

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 2,146 nationwide Grand Marquis listings starting at $1,985.

ZIP:

Search Mercury Grand Marquis Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,040
#2 kbro
kbro
Reputation 2,030
#3 Js08016
Js08016
Reputation 1,580
View All

Related Models For Sale

Used Lincoln Town Car
39 Great Deals out of 2,127 listings starting at $1,995
Used Ford Crown Victoria
5 Great Deals out of 1,395 listings starting at $1,700
Used Chevrolet Impala
933 Great Deals out of 35,377 listings starting at $1,700
Used Ford F-150
3,070 Great Deals out of 208,275 listings starting at $1,200
Used Mercury Marauder
37 listings starting at $7,998
Used Chrysler 300
485 Great Deals out of 22,690 listings starting at $1,000
Used Cadillac DeVille
5 Great Deals out of 1,964 listings starting at $1,600
Used Chevrolet Tahoe
884 Great Deals out of 28,086 listings starting at $1,700
Used Buick LeSabre
11 Great Deals out of 2,266 listings starting at $1,299
Used Honda Accord
983 Great Deals out of 75,076 listings starting at $899
Used Toyota Camry
1,205 Great Deals out of 96,020 listings starting at $1,250

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
43 listings starting at $7,500
2010 Mercury Grand Marquis For Sale
6 Great Deals out of 130 listings starting at $2,999
2009 Mercury Grand Marquis For Sale
4 Great Deals out of 107 listings starting at $2,995
2008 Mercury Grand Marquis For Sale
4 Great Deals out of 153 listings starting at $2,995
2007 Mercury Grand Marquis For Sale
9 Great Deals out of 162 listings starting at $1,985