Heater won't get hot. Thermostat is ok diverter door works. What else do I check

Asked by Nov 01, 2015 at 09:38 PM about the 2006 Mercury Grand Marquis

Question type: Maintenance & Repair

3 Answers

52,725

Check the heater control valve.

58,805

And you may have air in the system that needs to bled out, or a plugged heater core. Make sure the engine gets to operating temp. of 195 to around 200* to insure a good thermostat.

1,505

be sure your coolant in the rad and expansion bottle is topped up

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 5,290
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,660
View All

Related Models For Sale

Used Ford Crown Victoria
12 listings starting at $7,199
Used Lincoln Town Car
12 listings starting at $3,795
Used Chevrolet Impala
41 Great Deals out of 907 listings starting at $1,499
Used Chrysler 300
52 Great Deals out of 919 listings starting at $2,000
Used Dodge Charger
49 Great Deals out of 816 listings starting at $3,950
Used Ford Taurus
26 Great Deals out of 288 listings starting at $4,495
Used Ford F-150
281 Great Deals out of 7,320 listings starting at $1,995
Used Ford Mustang
996 listings starting at $4,995
Used Honda Accord
75 Great Deals out of 1,056 listings starting at $1,990
Used Chevrolet Tahoe
554 listings starting at $6,900
Used Chevrolet Silverado 1500
100 Great Deals out of 6,552 listings starting at $2,339
Used Buick LaCrosse
10 Great Deals out of 476 listings starting at $4,888