1988 mercury grand marquis, my A/C hi/low speed control is not working. It kn blows air when I have it in HIGH but if it gets to cold and I want to turn it down just one notch it'll turn off. Can anybody help me out with this problem?.If so, what part/s will I need to change?

Alex Ramirez
0

Asked by Alex Mar 26, 2013 at 09:25 PM about the 1988 Mercury Grand Marquis

Question type: Maintenance & Repair

5 Answers

tennisshoes
25,415

Mercury had 2 systems in the Grand Marquis, the ATC system and the standard. What one do you have?

Alex Ramirez
0

I have no idea :/

tennisshoes
25,415

OK look at the temp control lever if it has numbers on the scale then it is an ATC unit, if it has only a scale that goes from blue to white to red then it is a standard.

tennisshoes
25,415

If your system is standard there is a resistor block under the hood fairly close to the blower motor, it will be held in by 2 small screws and might be a faded red color if it hasn't been replaced before. It is available at most parts stores. If it is a ATC unit the fan is controlled by a small mode control unit kinda like a computer, if that needs work I would suggest taking it to someone you trust in an auto repair shop.

Julian Vorgic
135

I second the blower motor resistor block, under the hood. The HI setting is the normal blower speed, so HI will always have juice. The resistor gives you MID and LO speeds. Its right behind the intake plenum, screwed on to the heater box. Its straight forward to replace but, its in a tight spot.

Your Answer

Add photo

Related Questions

Grand Marquis
Looking for a Used Grand Marquis in your area?
CarGurus has 3,298 nationwide Grand Marquis listings starting at $1,495.
ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 2,060
#2 kbro
kbro
Reputation 1,130
#3 Tom Demyan
Tom Demyan
Reputation 470
View All

Related Models For Sale

Used Ford Crown Victoria"
27 Great Deals out of 1,449 listings starting at $1,750
Used Lincoln Town Car"
112 Great Deals out of 2,919 listings starting at $1,350
Used Dodge Charger"
548 Great Deals out of 28,215 listings starting at $3,999
Used Ford Mustang"
938 Great Deals out of 28,057 listings starting at $1,500
Used Ford F-150"
2,934 Great Deals out of 154,940 listings starting at $1,500
Used Ford Taurus"
595 Great Deals out of 19,055 listings starting at $1,600
Used Buick LeSabre"
93 Great Deals out of 3,164 listings starting at $1,200
Used Cadillac DeVille"
61 Great Deals out of 3,012 listings starting at $1,750
Used Honda Accord"
1,238 Great Deals out of 69,469 listings starting at $500

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
40 listings starting at $9,500
2010 Mercury Grand Marquis For Sale
8 Great Deals out of 127 listings starting at $10,787
2009 Mercury Grand Marquis For Sale
13 Great Deals out of 176 listings starting at $6,932
2008 Mercury Grand Marquis For Sale
16 Great Deals out of 268 listings starting at $5,862
2007 Mercury Grand Marquis For Sale
9 Great Deals out of 213 listings starting at $1,495