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Defective ballast resistor pack.
OTHER :It sounds like it could be the blower motor relay / resistor. I replaced mine today in my 2001 Chevy Impala. It was next to impossible since I heard that the way to get to the resistor was to remove the blower motor housing and repair it that way. I instead removed the blower motor and got to it that way. The two screws in the back are knuckle busters. Good luck and I hope you have patience or enough money to have someone else repair it.
What else can I help you with?
Why does my heater fan only work on a high speed and how do I fix it?
try replacing the blower motor resistor
Why does the heater in your 1995 town car only work on high?
The blower motor speed resistor is burned out.
Why does the heater fan only work on high on a 2001 safari?
Check the low speed relay and the resistor at the motor
Why does the heater on a 2003 Chevrolet Tracker only work on high speed?
do you mean the speed of the fan? if so, it'a relay generaly near the motor of the fan. If it's the heat who only came at high speed, you need to add some antifreeze.
What causes the heater-defrost blower only ro work on high speed on a 1998 Dodge Stratus?
blower motor resistor is burned out
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.
2002 Astro heater doesn't work on high speed?
you might need a new switch.
Why would the heater in a 2002 Grand Prix only work on high?
Defective heater resistor pack.
Your heater blower will just work on high speed?
The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.
Why does Heater fan not work on high speed?
The high-speed setting on a heater fan may not work due to a faulty resistor, a malfunctioning fan switch, or a problem with the fan motor. It is recommended to have the issue diagnosed by a professional technician to determine the exact cause and appropriate solution.
How do you find fault on heater fan not workin mk3 mondeo?
If all speeds do not work, suspect the fuse, the switch, the switch connector or the blower motor. If only high speed works, suspect the blower motor speed resistor. If low speeds work and not high, suspect the blower motor relay.
Why does heater in 1996 Dodge Grand Caravan heater only work on high?
Maybe because your climate control system needs to be repaired....
