On My 2003 Mercury Grand Marquis my ac does not blow hot or cold air. It just blow cool air. It gets cold at night time though.

10

Asked by Sep 13, 2013 at 10:15 AM about the 2003 Mercury Grand Marquis LS Ultimate

Question type: General

AC doesn't blow hot or cold!!

7 Answers

23,775

The Heater core could be clogged. Check to make sure that the coolant is full and flowing at operating temperature. You may need a cooling system flush (or back flush)

1 out of 1 people think this is helpful.
27,015

Blend door actuator stuck?

1 out of 1 people think this is helpful.
23,775

That's a possibility kbro. And a bummer to change out.

2 out of 2 people think this is helpful.
27,015

Dash has gotta come out for that one right?

1 out of 1 people think this is helpful.
10

yes

10

I can control the speed of the blower but not the temperature!!!

1 out of 1 people think this is helpful.
23,775

Yup. That's a Blend Air Door Actuator. It sits on top of the heater case tucked under the dash. You can try accessing it through the glove box by pulling the glove box, passenger's air bag and right vent ducting BUT....you run the risk of damaging the heater case and tearing up your arms.

Your Answer

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,813 nationwide Grand Marquis listings starting at $1,600.

ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,340
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,710
View All

Related Models For Sale

Used Ford Crown Victoria
8 Great Deals out of 1,047 listings starting at $2,225
Used Lincoln Town Car
32 Great Deals out of 1,824 listings starting at $600
Used Chevrolet Impala
513 Great Deals out of 28,995 listings starting at $1,100
Used Mercury Marauder
27 listings starting at $9,367
Used Lincoln Continental
4,145 listings starting at $41,448
Used Cadillac DeVille
9 Great Deals out of 1,593 listings starting at $1,499
Used Ford Mustang
361 Great Deals out of 46,750 listings starting at $1,500
Used Ford Taurus
213 Great Deals out of 20,077 listings starting at $1,650
Used Ford F-150
2,229 Great Deals out of 208,159 listings starting at $1,499
Used Chevrolet Tahoe
567 Great Deals out of 27,281 listings starting at $999
Used Honda Accord
711 Great Deals out of 86,747 listings starting at $1,250

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
3 Great Deals out of 32 listings starting at $5,495
2010 Mercury Grand Marquis For Sale
83 listings starting at $2,495
2009 Mercury Grand Marquis For Sale
4 Great Deals out of 107 listings starting at $4,000
2008 Mercury Grand Marquis For Sale
4 Great Deals out of 137 listings starting at $2,250
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 148 listings starting at $1,600