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2004 f 150 4x4 blower motor works spuratically off and on after vehicle warms up

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To know for sure what's wrong some electrical testing needs to be done ! Videos on youtube testing blower motor electrical circuit . Could be the blower motor itself , the resistor pack , a relay or a front blower motor speed controller . And all this depends on if yours has electronic manual or electronic automatic temp. control . http://www.bbbind.com/free_tsb.html free wiring diagrams . HVAC Blower Motor Circuit Blower Motor Problems Auto Repair Help

Posted on Jan 04, 2017

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Posted on Jan 02, 2017

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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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These will help.

Thanks.

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Sorry its blower



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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1 Answer

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HEATER BLOWER MOTOR


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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1 Answer

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It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected.If its 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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1 Answer

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It can be faulty blower motor or faulty blower motor resistor.Get the blower motor inspected.If its 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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I dont know what these other guys are saying..I think they snif the glue!!! YOUR BLOWER FAN ASSEMBLY CAN EASILY BE REMOVED !!
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On my wifes 2004 yukon, the engine warms up and the blower works fine, but it takes forever for the air to finally blow warmly. when it finally does, if we switch it to another location (floor or defrost),...


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