my 2009 mercury grand marqus

Asked by Dec 17, 2015 at 01:54 PM about the 2009 Mercury Grand Marquis

Question type: Maintenance & Repair

my heater does not heat

3 Answers

705

With the engine warmed up and turned off. Check the heater hoses under the hood. Be sure they are both hot. If only one is there is a plug of some kind in the heater core or the hoses. If both are hot then it may be the blend door actuator not functioning. Heater core plugs can be removed with garden hose pressure on a cold engine. Remove both hose from the engine and run water through them till it appears the water if flowing freely. Reconnect and try heater with warmed up engine.

2 out of 2 people think this is helpful.
705

When i mean by a heater core plug, i am talking about a mass of rust, coolant solids and metal the make up a gooey ball that can plug up the heater core. Have flushed a few of the these out over the years.

6,405

Ditto sherrifstech

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 6 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,370
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,710
View All

Related Models For Sale

Used Ford Crown Victoria
12 listings starting at $4,999
Used Lincoln Town Car
17 listings starting at $1,600
Used Chevrolet Impala
49 Great Deals out of 900 listings starting at $1,995
Used Dodge Charger
43 Great Deals out of 850 listings starting at $4,900
Used Chrysler 300
61 Great Deals out of 945 listings starting at $1,477
Used Ford Mustang
5 Great Deals out of 1,246 listings starting at $2,000
Used Ford Taurus
28 Great Deals out of 308 listings starting at $4,988
Used Ford F-150
292 Great Deals out of 8,176 listings starting at $2,100
Used Chevrolet Tahoe
573 listings starting at $6,990
Used Cadillac DTS
17 listings starting at $4,700
Used Honda Accord
94 Great Deals out of 1,199 listings starting at $1,495