Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2008 >> Explorer 4WD V8-4.6L >> Repair and Diagnosis >> Heating and Air Conditioning >> Blower Motor Resistor >> Description and Operation
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Blower Motor Resistor: Description and Operation

BLOWER MOTOR RESISTOR

The blower motor resistor has 3 resistor elements mounted on the resistor board to provide 4 blower motor speeds. Depending on the blower motor switch position, series resistance is added or bypassed in the blower motor circuit to decrease or increase blower motor speed. The blower motor resistor has an overheating device (thermal limiter) that opens the resistor coil when the temperature reaches approximately 184°C (363°F), interrupting the blower motor operation in all speeds except HIGH. The thermal limiter cannot be reset and is not serviceable.
pro multis · About Operation CHARM