1. dianaf0214

    dianaf0214 Junior Member

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    My 2009 f150 recently started having issues with the ac. Although the blower speed is on high, the air coming through the vents feels like it's on low.... really sucks and not enough to cool my truck...I live in South Texas, 100 degree weather. We replaced the resistor, didn't fix it... I've been told it may be a bad fan clutch. Any thoughts??...

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  2. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    Welcome to fordfullsize.com

    Could be something in the fan switch itself since you already tried the resistor fix.

    Definitely not the fan clutch, that is the fan that cools the coolant in the radiator.
    It it were going bad you would have an engine overheating issue.

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  3. dianaf0214

    dianaf0214 Junior Member

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    I've been researching online since this issue started, I've also been thinking about the blend door actuator. What's your take

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  4. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    My understanding the blend door is switching blower
    motor blown air from the heated heater core air
    to the cooled a/c evaporator core air that would cause a
    mix of both warm air coming out at all fan speeds
    Low-2-3-Hi

    You may have a combination problem.
    Fan speed plus blend actuator.
    There is a way the jumper the resistor to give the motor
    full power thus verifying the on dash selector switch is bad.

    I'm not much help repair wise on the newer F models, too old school.

    Hoping some of the other members
    who have blend door / fan switch repair experience will chime in.
     
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  5. dianaf0214

    dianaf0214 Junior Member

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    Do you know if the 2009 has a cabin filter?

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  6. dianaf0214

    dianaf0214 Junior Member

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    So I took my truck to ac mechanic..... was told it was dirty evaporator .... $167 to clean out

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  7. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    I find that hard to believe a dirty evap is blocking the fan from blowing on high.
    But I'm not there also.

    Does the fan blow on high in defrost mode?

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  8. dianaf0214

    dianaf0214 Junior Member

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    No....it does the same thing.

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  9. dianaf0214

    dianaf0214 Junior Member

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    I dropped it off this morning, will pick up in about an hour... will update you on results... I'm praying it works

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  10. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    Cold air again !

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