Question about 2005 Mercury Montego Luxury

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The blower on ac/heater is very high and only turns off if u turn off car

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6ya6ya
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Posted on Jan 02, 2017

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noranda21
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SOURCE: WHEN I TURN ON THE HEATER/AC BLOWER SWITCH NOTHING

The a/c blower is based upon the contour a/c system and the weakest link always was and still has been that blower motor resistor... It's white plastic on the passenger side under the dash, near the center right kick panel attached to the a/c case itself with 4 wires going to it with one bolt holding it in. My guess is the connector to it will have the wires melted back a bit or the connector won't come off of the resistor itself.

Fix is usually replace the resistor and install a connector kit from Ford that was used in a recall for Contours that used a heavier gauge wire at the end near the resistor itself.

I don't have the numbers handy, but a Ford parts department guy whos been there a while will probably know what I'm talking about .

The switches were known to burn on some models also where it would melt the connector and switch... Usually I replace the switch and connector also in a pair with the resistor due to my dislike of Ford of Europe's idea of undersizing critical wires.

If the resistor ain't burnt, you may want to pull and see if the connector on the switch ain't burnt.

Posted on Dec 28, 2010

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1 Answer

How to Diagnose Car Smells?


When is the smell noticed? If it is when the AC or heater is turned on then you have mold in the HVAC. Get a can of LYSOL spray and turn the AC/Heater blower on high, spray about 1/2 can into the air intake at the base of the windshield. Cover the vent openings with a towel to avoid the LYSOL getting on the interior parts.

Oct 14, 2016 | Cars & Trucks

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2004 Chrysler pacifica AC/HEATER continuously blows with power button in off position


sounds like a blower motor resistor or bad relay. Blower motor resistor is so you don't burn up the blower motor.

Aug 05, 2016 | Cars & Trucks

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Ac doesnt turn on. The blower stays on .I have to unplug it


Sounds like the heater control module has failed. If the blower is stuck on high it could be the blower relay, but that would not affect the ac.
You may need a shop manual to make the repairs.

Feb 03, 2014 | 1999 Chevrolet Astro

1 Answer

Ac blower motor stopped working


YJ car.
the blower is dead. is that it?
does it blow full speed on high
do you have 12v on terminal A of blower , term B is 0v ground
got that, then the blower is dead.
if not 12v, then the controls are bad.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

page 47
4 parts to make blow
1: fuse 12 good.
2: switch heater /on off.
3: high, med,low speed, use high, its direct.
4: the blower,
one of those points has no 12v on high,
use a simple voltmeter to find the failed point.

Jan 14, 2014 | 1994 Jeep Cherokee

1 Answer

1994 chevy kodiak with Cat 3116. Heater/AC blower shuts down


you should make a diagnostic to know what happened to your car
of course you need an auto diagnostic tool : http://www.chinasnoy.comand you can find all kinds of tools in chinasinoy.com

May 21, 2013 | Cars & Trucks

1 Answer

Heater and ac stopped working 1996 gmc sonoma there is a clicking noise when i turn the fan low to high and also the same sound turning switch from off to different blower settings but no air comes out...


probly the switch is burnt-it happens when the blower motor gits old and draws too many amps---so replace blower at same time or else same issue again--and while u gut dashboard all apart inspect ac evaporator and heater core-theyr aging too

Oct 19, 2011 | 1996 GMC Sonoma

1 Answer

The heater when I turn it on high blow it makes a noise like I can here a fan running and when I turn it down you can here it shut down. Note; the blower only works on high.


LOWER SPEEDS FOR HEATER / AC ARE CONTROLLED BY A RESISTOR. IT IS NORMALLY LOCATED UNDER THE RIGHT SIDE OF THE DASH, NEAR THE BLOWER MOTOR. APPROX. 2 1/2 INCHES LONG, HELD IN WITH 2 HEX OR PHILLIPS HEAD SCREWS. GET A NEW ONE BEFORE YOU START FOR IDENTIFICATION & COMPARING. GOOD LUCK, DR VOLT.

Jan 24, 2011 | 1997 Plymouth Voyager

2 Answers

FUSE BOX DETAILS


left to right...
1. empty
2. e flashers
3.horn, brake lights
4.clock, trunk light, inside light, radio
5. rad. cooling fan relay (AC only)
6. right side running lights
7. left side running lights
8. right high beam and indicator
9. left high beam and indicator
10. right low beam
11. left low beam
12. reverse,turn signal and inst panel
13. main and transfer fuel pumps, auxiliary air reg., ox sensor heater
14. license plate and glove box light
15. wipers
16. rear defogger
17. heater blower (no AC)
18. cig lighter
19. rad cooling fan (no AC)
20. Heater blower (AC)
21. rad cooling fan (AC only)
22. empty
23. Ox sensor, idle stabilizer,seat belt warning relay, (Digifant only, control unit, idle boost control, idle boost valve)
24. inst panel lights, heater control lights
25. reading lamps
26. empty
27. empty
28. empty

Hope this helps...;-)

Apr 17, 2009 | 1992 Volkswagen Fox

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