2002 f=250 heater/ac blower will only run on high speed what is the fix thanks ?

Asked by May 04, 2017 at 09:14 AM about the 2002 Ford F-250 Super Duty Lariat 4WD Extended Cab SB

Question type: Maintenance & Repair

1 Answer

15

few things, first, check fuses to see if it has high and low for the heater in fuse panel, second and most common problem, the resistor on the blower motor, that's most likely your problem. it's under the dash, passenger side. if that isn't it, heater control switch it bad. Most likely the resistor is bad.

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