Question about Ford F-150

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Poof no blower motor

My 1992 f150's heater just stopped working, one second it was and then poof no blower motor, i just replaced the resistor what could this be?

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Unhook power lead to blower motor. use a test lite to see if you have power at that point. if you do the blower motor is toast. if no power trace back to swithch. why did you change the resistor?

Posted on Feb 07, 2012

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Posted on Jan 02, 2017

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SOURCE: Blower motor has only low speed

You may need to get the correct resistor, as they are designed to only allow so much amperage to go through them. If it is getting very hot it is runnig to many amps through it. It will eventually blow and you will need to replace it anyway.

Posted on Jul 28, 2008

  • 1 Answer

SOURCE: locating heater blower motor resistor

the resistor is behind your glove box. open the box and push in the sides to release it and let it hang down...the resistor is right there. I didn't try to replace it, a friend did it, but the part was under $20.

Posted on Feb 01, 2009

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SOURCE: have to change blower motor resistor where is it located

Located behind glovebox. 2 screws and 2 plugs. very simple

Posted on May 30, 2009

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SOURCE: where is the heater blower motor resistor located

It is located right next to the blower motor because it stays cool with the air from the blower and I think it has a 4 wire connector depending on how many speeds there is on the control.

Posted on Nov 12, 2009

pugwash814
  • 377 Answers

SOURCE: Replace heater blower motor on 1992 subaru legacy

yes that is correct, remove glovebox , metal bracket in front ( mark which way round this bracket goes it will go back wrong and glove box wont fit ) , unplug electrical plug from heater motor, unscrew 3 bolts/screws from motor replace in reverse..30 min tops..

Posted on Nov 15, 2009

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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

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

These will help.

Thanks.

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Hello hfg.

1. First of all, tap the blower motor gently to see if it starts it. If it does, the brushes or the armature in the motor are worn- replace the motor.
2. If that doesn't help wiggle the connector on the motor and the blower motor resistor. There may be burned or loose connections.
3. If you have power on fuse 7 with the key on, then check for power at the blower motor on the blue white wire. If no power on it you have a break in the wire between the fuse and the blower.
4. Next, check for power on the blue black wire. If there is power there that proves there is continuity through the motor(that's good), if not, replace the motor.
5. The blue black wire then goes to the blower resistor. this resistor gives the different blower speeds.
inside the resistor there is a thermal fuse. It isn't replaceable, only the resistor as an assembly.
If the thermal fuse blows it may indicate that the blower motor is beginning to wear out and draw too many amps. And then you may need to replace both the blower and the resistor.
Check with an ohmmeter across the thermal fuse. If it is open circuit, replace the resistor and the blower. If you don't replace the blower it may blow the new resistor again.
6. If it all checks out to this point, ground the blue/red wire at the resistor. If the blower comes on the problem then becomes the blower switch or a break in the wire to the switch.

Whew.. Hope this helps solve the problem, my fingers are sore..Ha.

Thanks for using FixYa.

KL

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