Maybe someone will email me with answer for below. m_dgeving@msn.com.

Asked by Jun 01, 2017 at 10:52 PM about the 2010 Ford F-150 Platinum SuperCrew 4WD

Question type: Maintenance & Repair

My heater/air conditioner blower fan makes a kind growling noise & only runs at
low speed, Dealer suggested Blower motor resistor $94.00 later installed didn't
help.Pulled blower out plugged into power held it off floor works great, re-
installed no speed & same growling noise, loosened mounting bolts let it drop
down about 1/4 in runs fine tighten bolts no speed & same noise

1 Answer

21,565

Sounds like a power loss in a wire or component or ground. May even be the switch.

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