Question about 2005 Ford F-150

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Fan only works on high - 2005 Ford F-150

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This problem is caused by a defective blower motor speed control resistor, it is located next to the blower.

Posted on Aug 21, 2010

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Replace the blower switch on the control head you manually adjust

Posted on Aug 21, 2010

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A.c only works on high


Year/make/model??? Are you referring to the AC fan speed only working on high inside the vehicle? If the fan is only operating on the high speed, suspect a fan motor resistor problem. The resistor may have to be relaced

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The only speed on my heat/air fan the will work is high. All other speed quite at the same time. Would this be the fan motor or could it be a fuse?


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Heater & cooling fan only works on high.Power locks don't work.


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Air conditioning works when car first starts up (Volvo s40) then stops cooling after a while (usually when I am stopped in traffic) -- then if I turn it off and back on after a few minutes it works again....


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