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The problem is most likely a bad Blower Motor Resistor. The High setting bypasses the resistors and connects directly to the battery. The lower speeds use the resistor to lower the voltage. Where is it?: Usually the reisitor is found behind the glove box to the left. Also the wires from the control knobs should lead to the resistor.
What else can I help you with?
Heater only works on high speed?
The heater motor speed resister is burned out.
How do you adjust the idle speed of a 1999 jeep wrangler the idle is set to high?
Idle is not adjustable. You have a electrical or vacuum issue that needs diagnosed.
Where would you check fuses for a 1999 Jeep Cherokee HVAC that only works on the high speed?
It is not a fuse problem. The HVAC resistor pack is defective. Replace it.
1999 ranger heater fan only runs on high setting how can you diagnose problem?
heater resister is bad
How do you unlock the high speed jeep on Lego robot chronicles online?
win the speed inferno challenge.
2003 jeep wrangler heater fan switch works on high only?
Replace the blower motor resistor.
Heater only works on high?
The blower motor speed resistor is burned out.
1999 Buick Regal heater only works on high?
Check the blower resister
What are the ratings and certificates for Need for Speed High Stakes - 1999 VG?
Need for Speed High Stakes - 1999 VG is rated/received certificates of: Australia:G USA:E
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 your heater blower only run on high?
The blower motor speed resistor is burned out.
Why does your Heater fan only blow on high speed?
Switch problem? Cables disconnected?
