Ac/ heater Blower control

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Jan 12, 2007 | 05:47 PM

JSmith43223

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Joined: Jan 2007

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Ac/ heater Blower control

Newbie:: First Post

Blower motor runs on high only. Changed it still the same, checked switch
seams alright. Any ideas? Thanks in advance

Jan 12, 2007 | 06:08 PM

butch h

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Probably resister/diode assy. on heater hsng. in engine compartment.

Jan 12, 2007 | 07:13 PM

F150xlt

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Joined: Jan 2002

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From: Baltimore

Quote:

Originally Posted by butch h

Probably resister/diode assy. on heater hsng. in engine compartment.

Jan 12, 2007 | 10:57 PM

grizz3000

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Joined: Oct 2006

Posts: 332

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From: SE of Bennett Colorado

Yep, definitely the resistor. The high setting uses all the current available. The lower settings shunt the remaining current through the resistors. The different speeds (other than high) shunt different levels of current requiring different sizes of resistor coils.