Tribute AC fan
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
Obviously, you need a new car. Give me your old one, and go buy a new one. Problem solved. If you don't want to to do that, I would check the 'resistor pack' on the heater plenum for being open. It looks like an array of toaster wires, with each piece of wire adding resistance to the electricity to drop the speed of the fan. It is not used in the 'hi' speed position, and in most cases when it fails 'hi' will still work.
Alternatively, you can apply power directly to the blower motor to determine if it is functional.
A third possibility is the switch itself, which would be indicated by the motor running in the immediately previous test, but not running when the switch is operated. There is also primary switch on the control head for the HVAC system that de-powers the blower motor when the system is in the 'off' position. In any other position, there is power to the speed control, and hopefully to the blower motor.
So, in sum, check for power at the fan, check for operation of the motor when power is applied, and then check the two switches. You might just have a loose connection.
tom
Alternatively, you can apply power directly to the blower motor to determine if it is functional.
A third possibility is the switch itself, which would be indicated by the motor running in the immediately previous test, but not running when the switch is operated. There is also primary switch on the control head for the HVAC system that de-powers the blower motor when the system is in the 'off' position. In any other position, there is power to the speed control, and hopefully to the blower motor.
So, in sum, check for power at the fan, check for operation of the motor when power is applied, and then check the two switches. You might just have a loose connection.
tom
Laughing Gas
Joined: Dec 2003
Posts: 1,062
Likes: 12
From: Ford, WA
i had the same prob. with my 06 escape.. make sure you're getting juice to the blower motor with a test light/meter..my problem turned out to be a bad blower motor... the brushes were pretty much gone.. 1 year seems aweful short for the life of a blower motor..even 5 for mine seems short.. i think they use cheap motors..the blower in my old 88 ranger is the original and it still works great..they don't make 'em like they used to..
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
When I had one wear out the brushes, it worked for a while, then didn't, then did again. You should not have worn out brushes unless ... Mine lasted over 10 years.
I would be looking for loose connections on the control head or the resistor pack or the blower motor itself.
tom
I would be looking for loose connections on the control head or the resistor pack or the blower motor itself.
tom
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