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My 1994 Mazda b2300 has only one setting for the heater motor when you turn on the heater motor the cold air works the hot air works but only seems to have 1 setting --what can cause this?
Wiki User
∙ 15y ago
It sounds as if the "blower resistor" has failed. Not terribly uncommon, this device is usually mounted in the heater fan case (so it can be cooled by the blower airflow) and has several different resistors that lower the voltage to the blower motor, therefore slowing it down. My guess is that there is only high speed. They are not terribly expensive but can be somewhat problematic (on some models) to replace. Greg Skolnik greg@motor-works.com
Wiki User
∙ 15y ago
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