2004 Mercury Grand Marquis

10

Asked by Nov 20, 2016 at 10:14 AM about the 2004 Mercury Grand Marquis

Question type: Maintenance & Repair

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 disconnect the power too
allow the codes to clear. This worked, but know I
can't s get the thing to trun off. Every thing works
on the controls but the off to trun off the blower.
For example.. I get in the car and trun the key and
start the car up. The car is running and the air is
blowing through the vents. I press off and nothing,
I press ac and it began to get cold, I press off and
the ac and the cold air stops, but the blower
continues. This occurs in heat mode too.
Also, the vents have a hard time changing from
defrost,  to vents, and it will not go into floor mode.
If you like to decuss thus with me please send an e
mail to me... albertoorozcom at hotmail . Com
Or you can text me nine zero nine, two three eight,
nine two zero two
Thanks in advance

3 Answers

1,205

The slow moving parts indicate a vacuum leak going to the system. There are guys on this forum who know a lot about this. A cracked vacuum hose somewhere? See what they say.

1 out of 1 people think this is helpful.
10

10-4 I started reading some of the input and trying to get a little more understanding. Currently in So. Cal and half way through autumn. Hopefully I get the information I need before summer time. Thanks

1 out of 1 people think this is helpful.
1,205

Check any small vacuum hoses under the hood going to the intake manifold. See if they are cracking, or if one is not tight on a fitting. Find which one, when disconnected, makes the heater doors stop working. My car has the manual heater a/c, so it's simpler.

1 out of 1 people think this is helpful.

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