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Blower Fan Motor Works On High Only - 2003 Ford Expedition

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HI this sounds like the blower resistor has failed,it is a very common problem you will find your local dealer will have one in stock. good luck

Posted on Aug 25, 2010

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Only high speed works on fan motor


This condition is caused by a defective blower motor speed control resistor. The resistor is located right next to the blower motor with the connector end sticking out of the ducting for the AC/Heater system. Very easy to replace and the part is cheap as well.

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You cannot lube the motor as it is sealed for life. The reason it only works on high is either that the motor is defective or the blower motor resistor pack is defective. As the motor is squealing, which is an indication that the bearings are failing, I would recommend you replace the blower motor and see if it still only runs on high. If so, then replace the resistor pack.

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01 grand.prix ac fan switch only works on high. has a duel temp controller when you turn fan off the only way fan comes back on is to move the temp controller levers


Hi!!
When the Blower Motor Resistor (controls blower speeds) goes bad, the blower motor works only on HIGH SPEED. REPLACE IT.
BLOWER MOTOR RESISTOR Removal & Installation
  • Disconnect negative battery cable.
  • Remove right lower instrument panel insulator panel.
  • Disconnect blower resistor connector located behind right side of dash.
  • Remove blower resistor screws and blower resistor.
To install, reverse removal procedure
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

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Fan only works on high on 1995 Chevy K1500. I tried replacing the relay(?) behind the glovebox, but no change.


The blower motor resistor is the culprit.Usually is located near the blower motor.Generally an inexpensive repair.However it is possible that the blower motor may have caused the resistor to burn out.

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1 Answer

Cool fan low doesn't work. Doesn't appear to be


It needs to have the blower motor resistor card replaced.
It still works on high speed because on the high setting the voltage does not go through the resistor.
The resistor is mounted beside the blower motor and is easy to replace.
There you are, thank you for using FixYa.

KL

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Replace relay under blower motor, under hood.

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2003 Ford Explorer Fan Blower Motor


Jeff, If I understand you correctly you say your blower motor only works on high? check your blower motor resistor, located next to blower motor. The resistor makes the other speeds availiable, high bypasses the resistor, let me know if that fixes you up

May 27, 2009 | 2003 Ford Explorer

1 Answer

Vent fan only works when set to 4


Hi.....
On your Vehicle the problem for the FAN speed is NOT the FAN switch.
99.9 % of this problem on cars is the BLOWER MOTOR RESISTOR.
The blower motor resistor give the speed to the Fan.
But on High speed the switch make a By pass of the switch using a Relay for the high speed.
The Blower motor resistor, is located Beside of the Blower motor On the passanger compartment.

If you replace the blower motor resistor you have 99.9% of this will solve your problem.

I'm a Mechanic.

I hope this help on your problem.
Thank you for use fixya...

Oct 09, 2008 | 2003 Nissan Altima

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