Question about 1992 Ford Ranger

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Heater blower only one speed

Only works on high

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  • Contributor
  • 17 Answers

You need a blower motor resistor. It is on the heater housing either inside the truck or under the hood. It is a relatively simple fix.

Posted on Jun 09, 2014

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Posted on Jan 02, 2017

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SOURCE: 2004 Ford F150 - AC/Heater blower speed 1 & 2 not working.

You might have a bad speed selector switch, or your blower motor resistor is faulty.

Posted on Mar 17, 2009

  • 12 Answers

SOURCE: I have high speed blower but no medium or low

It's likely a relay. I've often seen where the lower settings are ran through one relay and the higher setting ran through another because of the difference in amperage. I'd start there, the relays are often pretty cheap and a lot easier to replace than tearing the dash apart to change the switch.

Posted on Oct 09, 2009

moparownr
  • 667 Answers

SOURCE: heater blower only works on high speed

You probably have a bad resistor, the resistor is located underdash on the passenger side next to the blower motor, remove the wiring harness and screws to remove it and replace it with a new one. The resistor is responsible for blower motor speeds less than full. Hope this helps, let me know.

Posted on Jan 15, 2010

  • 323 Answers

SOURCE: Location of the resistor for the heater fan speed

right side under dash

Posted on Jan 16, 2010

  • 82 Answers

SOURCE: I ONLY HAVE hIGH SPEED ON MY HEATER BLOWER, SPEED

blower motor resistor, speed controller

Posted on Jan 22, 2010

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Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


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=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

These will help.

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Heater is not working


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Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

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Hi!!
The Blower Motor Resistor also called Manual Temp. Control resistor), is fried, replace. The price with floor console $25 and without floor console $65. here is a pic.
87b9810.jpg

the resistor is located on the blower motor housing, fastened by two screws. It is the part where the electrical plug connects, the plug on the pic. goes to the blower motor.
A HELPFUL - 4 THUMBS rating for this solution would be greatly appreciated. Thank you for using FixYa.

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