They are designed to run on low all the time. This is to keep the cabin pressurized to avoid dust from the outside getting in while driving. If it is on another speed other than low then maybe the speed control is the culprit.
SOURCE: 2000 lincoln ls heater not working...thermostat?
- If temp guage reads normal, the lack of heat may be due to the Heater Control Valve. Located in front of the radiator. Lower passenger side. A real bugger to replace.
- The plastic cap just over the thermostat is key in re-filling the anti freeze and bleeding air.
SOURCE: Location of the blower motr control module
replace the blower motor speed control module, that is the only cause of this problem that I know of, and u are about the 20 post for this issue that I have read, it has fixed the other ones..
SOURCE: need routing diagram for 2000 lincoln town car serpentine belt
There's a diagram at this link.
SOURCE: heat wont work 2001 lincoln town car cartia
Hello Callahan5922....this sounds like a stuck blower motor resistor. I assume the blower won't function in the a/c mode either? If you have a digital multimeter you can check this. I believe it's fuse #2....if the digital indicator goes up or down when you increase or decrease the fan speed thats good. Locate the blower motor resistor....you wil find it located on the fire wall behind the right valve cover hiding behind the heater hose, it's about the size of a cigarette pack. With the engine off, and key in on position, turn the A/C on High, and rap a tap tap tap on the resistor. You might be suprised when the blower motor takes off a runnin,
I hope this is the answer you need and i was able to help solve this for you. Good luck...
SOURCE: 1995 Lincoln town car blower motor resistor
it's most likely the blower resistor, which is located under the hood on the passengers side in the evaporator case. if you have manual a/c heat control this is a cheap fix, if you have auto temp control it is a very expensive part [around 200.00] good luck
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when heater is on everything works normal. when I turn it off the blower motor still runs at about 1/3 speed
It never done this before. I have the car for 8 years just started doing this. Speed control works fine so it is not that. when I push off button everything shuts off but blower motor runs at around 1/3 speed. higher speed than low speed
Turns out the Blower speed control module was the problem. Replaced it and now when unit is off blower is off. A diode in the module caused the problem.
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