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Is replacing a blend door motor on a 1999 Mercury Grand Marquis a DIY job?

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Almost book time is 6.3 hours due to the dash has to come out.

Posted on Jan 08, 2011


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The control wont switch from heat to ac

No there is not a way that you can reach the issue the part casing this without removing the dash completely. You have a failure in the temperature control blend door and or actuator motor. This job is way over the skill level or most DIY home mechanics, the dealer is the best option, cost is about $1200.00 depending on local labor rates. Get three estimates. The price will vary widely.

May 28, 2016 | 1999 Mercury Grand Marquis

1 Answer

1998 grand marquis heat blend door stuck on hot

There is a motor on the blend door that may have went bad and needs repaced this can be accessed by dropping the glove box. It is behind it.

Jan 08, 2014 | 1998 Mercury Grand Marquis

1 Answer

How to tie blend door so i have heat

sorry but it can not be done, you will need to replace the blend door motor, it is in the top of the air handler box, you will have to remove the dash to get to the motor....good luck

Dec 03, 2011 | 1996 Mercury Grand Marquis

2 Answers

Where is the blend door located onn a 2002 Mercury Grand Marquis

A blend door is located within the air distribution housing, under the dash. This area is very delicate to work on and it is easy to destroy non replaceable parts. I suggest that a qualified shop do this job for you...

Look for worn, damaged, or loose vacume hoses..

Feb 22, 2011 | 2002 Mercury Grand Marquis

1 Answer

Mercury 2004 Grand Marquis blend door failure

replace the blend door motor, unless the blend door itself is broken then theres a replacement door or box that need to be installed, this is a big job, the dash needs to be removed to do this job and ac system drained of freon with an ac machine.

Apr 06, 2010 | 2000 Mercury Grand Marquis

1 Answer

Is there a relearn procedure for blend doors in a 97 mercury grand marquis. Removed battery and now ac blows hot only

probably has a bad belend air door motor, to run the systen completely through its self diagnosis process" if has electronic auto temp control"
press."off "and "floor" at the same time release... then hit the "auto" button
wait til gives you code...... it will then "SOMETIMES start WORK normal til moved again by you.....
if manual, change hot to cold, listen carefully for clicking ...if clicking rplave blend door motor and inspect the plenums door while motor out

Jan 20, 2010 | 1996 Mercury Grand Marquis

2 Answers

2003 mercury grand marquis LS heater does notr blow hot air, blower blows but cold air comes what is the problem

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.


Nov 18, 2009 | Mercury Grand Marquis Cars & Trucks

1 Answer

1999 Merc Gran Marquis Need to replace blend door motor. I found a site that said i had to remove dash. I think if i can get the passinger airbag out, including it's cover i can get to it from there. how...

The air bag is bolted in from the back, remove the glove box door and the liner/compartment, I used to get at the motor from there without removing the airbag, it is hard but do-able.

Dec 02, 2008 | 1999 Mercury Grand Marquis

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