Question about 1998 Lincoln Mark VIII

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My Climate Control Switch or fan motor switch do not work.

I have 1998 MarkVIII Lincoln and my heater control switch doesn't work. It is a dail syled switch that goes from low to high level. I have had the fan motor tested and it is good. I wonder if the resitor in bad.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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keemo68
  • 1263 Answers

SOURCE: 1997 lincoln towncar

not neccessarly true there could be several reasons for the a/c clutch not to ingage. 1 the clutch relay is bad(it is located in the junction box under the hood,switch it with the heater relay if it kicks on the relay was bad) 2 the system is under charged(the binary switch will sense this and keep the compressor off) 3 a blown fuse fore the climate control(the fuse is located in the panel under the dash on the drivers side) there is a blockage in the system(this will cause the high side pressure to rise to a point where the high pressure switch cuts the circuit. My suggestion is to first check that the wire going to the a/c clutch is not coroded or broken. then check the relay, then have the system recharged provided that there are no leaks. if the guages when hooked up initially show that the low side pressure is 35 psi and the high side is 130-150 psi then you know it was an electrical problem. if those are not the pressure it could be a blockage (most likely in the drier) or the expansion valve is bad( this regulateds the system. hope these options are of help to you good luck and please rate this thanks

Posted on Sep 06, 2008

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  • 150 Answers

SOURCE: climate controls

Car manufacturers use the defrost mode as a default for safety reasons. Being they want you to be able to defrost the windshield no matter what. So when something goes wrong the system automatically goes to the defrost mode. You most likely don't have the vacuum hose connected under the dash at the climate control assy. Or if this vehicle doesn't use the vacuum hose style you may have not plugged in one of the connectors under the dash or behind the climate control assy. Good luck.

Posted on May 21, 2009

  • 2 Answers

SOURCE: new climate control unit but when on blower not working for heat or ac

I'm assuming the problem is the blower motor isn't coming on or working. 1st, check the fuse. 2nd, remove the glove box or pull the 2 tabs that act like stops when it's open ( the glove box will open out further) and you'll see the power plug connector for the blower unit. Turn on the blower through the climate control (heat, A/C, or whatever) and wiggle the connector to see if the blower turns on. If starts working, then an easy solution is pull the connector off and gently press the prongs together or inward. Then carefully reconnect with damaging the prongs. This worked for 96 Mark VIII due to the fact the prongs were not "seating" correctly in the female connector. It's been about 2 years since I did this and the connection is still good. If wiggling the plug doesn't work, pull the plug, turn on the climate control (heat, A/C), and check for voltage to the plug. That's about all I can help with.

Posted on May 28, 2009

centralvalle
  • 386 Answers

SOURCE: Cannot control my AC blower on my 2001 Lincoln

sounds like your switch contacts are shorted closed.. try disconnecting the switch for inspection and use a volt ohm meter to inspect switch across contacts...

Posted on Sep 11, 2009

Testimonial: "At first the blower stop working. When I ran a separate ground directly to the fan motor it worked but then I found out I had no control. "

  • 50 Answers

SOURCE: 96 lincoln town car ac fan doesn't blow

Check the blower motor speed controller which is located in the engine compartment just below where the heater hoses enter the firewall

Posted on Oct 12, 2009

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Fan /blower in my Mercedes S280 1998 model not working no noises Just wont blow. All switch lights related to A/C ventilation are ok.


http://www.autozone.com/cooling-heating-and-climate-control/a-c-heater-blower-motor/everco-a-c-heater-blower-motor/mercedes-benz/c280/1998/6-cylinders-2-8l-mfi-sohc/385580_0_1526_5281/?checkfit=true

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93 lincoln climate control does not work fan runs on high only


1 check ur range relay in the engine dept on firewall should be next to one for blower relay,if there is no voltage to range relay,remove the heater control panelin auto,connect one end of a jumper wire to the terminal of the switch connector with voltage,connect other end of the jumper to each of the terminals that carry voltage to the resister block,if motor runnormally at all speeds replace the switch,switch replacement:remove control assemble from the instrument panel,remove screw from beneath the assemble this holds switch to the main assemble n remove switch

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1 Answer

Heater switch replacment


Hello! it's my job to make things as easy for the customer as possible...Therefore I must ask why you want to replace the heater switch? Is it because you have lost one or two of the switch speeds? Your vehicle is noted for loss of the Blower Motor Resistor...
Changing the Heater switch means removal of the Climate Control Assembly which is not the easiest of jobs...I've included the process...But are you sure the blower resistor is OK? If you have lost 1,2, or all blower motor speeds it's more than likely the Resistor pack. And a lot easier to change...
Guru...saailer


Remove climate control:





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  1. Remove the instrument cluster finish panel...
  1. Remove the 3 climate control assembly screws...
  1. Disconnect the climate control assembly vacuum connector...
  1. Disconnect the 5 climate control assembly electrical connectors...
  1. Remove the climate control assembly..
Removal of blower motor Switch:
  1. Remove the climate control assembly.
  1. Remove the blower motor switch knob.
  1. Remove the blower motor switch.
    1. Remove the screw.
    1. Remove the blower motor switch.

Removal of blower motor Resistor:


12_26_2011_2_22_49_am.gif
Blower Resistor is under the battery tray...

MOTORCRAFT Part # YH1698 ...cost $25

12_26_2011_2_28_50_am.jpg

Guru...saailer

Dec 22, 2011 | 2007 Ford Econoline

1 Answer

Why wont my a/c or heater fan come on?


When the blower works only on the high setting its usually a bad blower resistor which is right near the blower motor. now you say it would always blow high regardless of the fan speed setting that would indicate probably the climate control unit or a connector problem somewhere. finally it not working at all may be the climate control unit or connection went bad even further. it might have a blown fuse or a bad blower motor in addition to the climate control unit or connector problem .check for power and ground at the blower motor. the power is supplied from fuses and may have a relay also. the ground is supplied from the climate control unit and goes through the resistor to control the fan speed. good luck

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2 Answers

My heater puts out heat however the blower motor does no run


I am going to assume that you have the Automatic climate control on your car. it gives you an auto fan mode, and temperature options. Often the problem does not lie in the blower motor, but rather, the climate control module. Often, the blower motor only works on Auto fan mode, or on full out. It will often also only operate in certain modes, such as only in defrost mode, or panel. I have had several town cars and Grand Marquies of these era's and have had the same problems with 2 of these cars. The only good solution to the issue is to replace the climate control module, which is the panel with all of the switches for the heater controls. If you're really adventurous or cannot find the replacement part, it may be possible to hard wire the fan to a multi resistance switch, but you really got to know what you're doing.

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this problem is caused by the blower motor speed control resistor being defective, it is located next to the blower motor.

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check the blower motor relay and resistor.

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1 Answer

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Check the relais module located inside under the rh side of the heather box you can see the connector most of them need to be replaced as they burn out you may need to replace the blower motor as well,high amp draw caused by faulty bearings will overload the blower motor controller

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