ac/ht fan blower not working right

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ac/ht fan blower not working right

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Ford >> Ford Trucks, Ford Vans & Ford SUV's >> Ford F-250 & Ford F-350 >> ac/ht fan blower not working right

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ac/ht fan blower not working right - 5/5/2008 7:16:20 PM

ranchhorse

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99.5 CC DRW 6Spd 4WD 7.3l; ac htr fan blower only blows out of the defrost vents no matter where dial is set to (except off). Any ideas what the problem is? Thanks, Luke

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RE: ac/ht fan blower not working right - 5/5/2008 7:47:33 PM

Hayapower

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The 'default' position for the venting control is 'defrost' if you have a vacuum leak.. But being it's 7.3,, it's equipped with a electric vacuum pump.. First thing to check would be the pump mounted on the right/passenger inner fender and verify its running.. Is this truck ESOF equipped? (Electronic shift on the fly 4x4) or does it have a manual transfer case?

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05 F250 C/C FX4 6.0
1969 Firebird Trans Am
2003 Hayabusa GSXR1300

(in reply to ranchhorse)

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RE: ac/ht fan blower not working right - 5/6/2008 3:39:42 AM

ranchhorse

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The transfer case is manual.

(in reply to Hayapower)

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RE: ac/ht fan blower not working right - 5/19/2008 3:08:50 PM

craigatkins

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how do you check to see if the vacume pump is working, can you hear it?