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Blower motor only runs on high and only blows hot?
You have 2 problems. First, the blower motor running only on the high speed is caused by a defective blower motor resistor pack. Replace it. Second the fact that it is only putting out hot air indicates the temperature control valve is defective or stuck.
Blower fan only runs in high position for a 1989 Buick Lesabre?
Either the blower motor fan switch is bad or the blower motor resistor pack is defective. It is more than likely the blower motor resistor pack.
Why does a blower motor only work on high?
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
Whats wrong the blower motor runs on all speeds but high on your 2002 Dakota?
Sounds like a bad blower motor resistor block.
Operation of a 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.
Explorer limited with EATC blower runs at High speed all the timeeven with the key turned off?
blower motor relay
Chevy Silverado blower motor runs on high only?
This is typically caused by a bad resistor. Could be the switch itself, but it's usually the resistor.
What does the blower motor resistor do on a 2001 prism?
The resister for the 2001 prism blower motor drops voltage to the blower motor. This is how the blower motor runs at a lower speed.
Why does your 2000 Ford Ranger ac heater fan switch only run on high speed setting?
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.
If you replace the resistor on the blower motor on 96 Jeep Grand Cherokee but still get only high speed or nothing from blower is there another possible cause?
If the fan runs only on high then it is probably the blower motor resistor, and not the blower motor itself. This is pretty standard in any vehicle. It should be located somewhere near the blower motor. --------------------------------------------There are two circuits that power the blower motor. A relay switches between the two different circuits. The high speed circuit suplies battery voltage to the blower. when you set the blower speed switch to any other speed but high the current passes through the other circuit. The blower resistor is in this other circuit. Check the fuse that supplies power to this circuit, check the relay that switches back and forth between the two circuits. Check the switch. Check the wiring. A VOM (volt/ohm meter) is very useful for this type of trouble shooting.
How do you troubleshoot the fan blower motor switch problem on a 1991 Ford F150?
It will be either defective fan switch, motor itself, blower motor resistor pack, blown fuse, or defective wiring. If the blower runs on high but no other speed, suspect the resistor pack.
2002 Chevy silverado fan blower only runs on speeds 3 4 and 5 where is the relay located?
Its not the relay, it is the blower motor resistor.
