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Why does your 2000 Ford Ranger ac heater fan switch only run on high speed setting?
Wiki User
∙ 16y ago
What has happened is your blower motor resisor has failed. When you turn the fan speed switch those settings are resistances that "damp" the blower motor and it runs slower. When this fails, it just has full current to the blower motor. Sometimes these are called block resistors. That likely is the problem.
Wiki User
∙ 16y ago
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Heater motor only works on high speed in 2001 ford ranger?
Normally when a heater blower motor only works on the High setting, it is caused by a defective Blower Motor Resistor Pack. The fix is to, Replace it. In very rare instances it can also be a defective blower motor speed control switch, but rarely.
Where is the Blower-Heater Switch on a 1995 GMC?
The blower "switch" is the knob or lever that you turn or move to adjust the fan speed. Located right on the climate control, next to the temperature setting.
1999 Ford Ranger Air Conditioning fan speed switch only blows air on max ac Is this a switch or fan motor problem?
If you are saying the blower motor only works on the high speed setting, then the problem is a bad HVAC Resistor Pack.
Why is your fan heater control switch is permanently on full even though the switch is on off?
It could be the high speed heater motor relay is stuck on or the switch itself is broken.
Why does your Heater fan only blow on high speed?
Switch problem? Cables disconnected?
Is there relay switch for heater fan?
Yes there is, but it only operates the high speed function.
2001 echo heater fan only has high speed is it the motor or switch?
It is the resistor, replace it.
2002 Astro heater doesn't work on high speed?
you might need a new switch.
What would cause heater to stop blowing on 2006 caravan?
Fuse, switch, speed resistor or motor.
What could cause the heat switch to only operate in the 5 setting?
Most heater blaower motors have 2 relays: 1 for speeds 1-4 and a high speed fan relay for 5th speed I do not know what kind of vehicle or location of relays Most heater blaower motors have 2 relays: 1 for speeds 1-4 and a high speed fan relay for 5th speed I do not know what kind of vehicle or location of relays
Where is the ac heater blower located under the dash or under the hood at the firewall it does not work on low speed only the other speeds work fine would this be the motor or switch?
For most GM trucks or SUV's, it's under/behind the glove box. But the most GM motors do not have multiple speed capacity. That is usually a function of the switch. Many of the GM multi speed vehicles use the heater function switch assembly to control motor speed. Unfortunately, many of them are "solid state" and require that the entire heater function switch be replaced when something goes bad.
Heater fan switch works only on the highest setting?
The blower motor speed resistor is burned out. You can replace only the resistor but the resistor probably burned out because the blower motor is going bad. If you want to fix it for good, replace both the blower motor and blower motor speed resistor.
