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

6 Answers

tennisshoes
39,155

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
39,155

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
39,155

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
155

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.

keither12
10

How do it look

Your Answer

Add photo

Related Questions

Grand Marquis
Looking for a Used Grand Marquis in your area?
CarGurus has 2,507 nationwide Grand Marquis listings starting at $995.
ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 2,970
#2 kbro
kbro
Reputation 1,330
#3 Ratpuppy
Ratpuppy
Reputation 740
View All

Related Models For Sale

Used Ford Crown Victoria"
22 Great Deals out of 1,046 listings starting at $1,950
Used Lincoln Town Car"
42 Great Deals out of 2,194 listings starting at $1,995
Used Dodge Charger"
468 Great Deals out of 27,053 listings starting at $3,200
Used Cadillac DeVille"
42 Great Deals out of 2,276 listings starting at $999
Used Ford Mustang"
608 Great Deals out of 33,963 listings starting at $1,595
Used Ford Taurus"
349 Great Deals out of 17,366 listings starting at $1,200
Used Honda Accord"
1,116 Great Deals out of 69,484 listings starting at $1,100
Used Ford F-150"
2,079 Great Deals out of 109,817 listings starting at $1,350
Used Buick LeSabre"
74 Great Deals out of 2,519 listings starting at $949

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
39 listings starting at $12,495
2010 Mercury Grand Marquis For Sale
3 Great Deals out of 86 listings starting at $9,990
2009 Mercury Grand Marquis For Sale
6 Great Deals out of 175 listings starting at $6,995
2008 Mercury Grand Marquis For Sale
14 Great Deals out of 215 listings starting at $3,490
2007 Mercury Grand Marquis For Sale
12 Great Deals out of 172 listings starting at $3,300