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It's the blower motor resister.
A blower motor resistor controls the speed of the fan from low to the 2nd highest by going through a resistor block. The resistance changes on each coil, therefore changing the speed of the blower. high setting bypasses all of the coils and runs at full speed.
You know yours has gone bad if it only runs on high.
Read more: Operation_of_a_blower_motor_resister
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∙ 12y ago
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Why does the blower motor only work on high even when the ignition is off?
it's a problem with the blower motor resistor,
Why does the heater blower only work on high?
from what i have read it is the blower motor resistor it goes bad and only lets the fan run on high google blower motor resistor and read on
Why does the blower only work on high and no daytime running lights?
A blower motor that only works on high is normally caused by a defective Blower Motor Resistor Pack. DRL, do not have a clue.
What would cause the blower motor on a 2001 Malibu to work only at high speed?
Probably a bad blower motor resistor
Why does the ac fan in your 2004 Chrysler sebring only work on high?
The blower motor resistor has failed.The blower motor resistor has failed.
Why does your 1999 Yukon heat only work on high?
If you are referring to the blower motor only working on the high speed setting, then the problem is the blower motor Resistor Pack is defective. Replace it. It can be the blower motor speed control switch but not likely.
What causes the blower motor to work on high only in a 2001 Chrysler Town and Country?
Usually the blower motor resister has gone bad.
Why the heater of a 1990 dynasty works only on high settings and after does not work at all?
If you are saying the Blower Motor only works on high, then your problem is a defective Blower Motor Resistor Pack. Replace it.
Why does the blower fan only work on high in a 2006 Chrysler Sebring?
blower motor resistor needs to be replaced
Why do your ac blower only work on high on your 1996 Chevy impala SS?
faulty blower motor resistor
Why does the AC-Heater blower fan motor on your 2004 dodge stratus only work on high speed?
The blower motor resistor pack is bad.
What would cause the blower motor on a 2002 Malibu to work only at high speed?
I would suspect the blower motor speed resister is shot.
