The heater fan on my 1993 f-350 has become really loud. I only have hi speed which I understand may be a resistor issue but how do I remove the fan and motor assembly to inspect it?
A heater blower motor resistor is an electronic device with three or more progressive resistors that allow the heater blower motor to operate at slower speeds.
The highest speed of the heater blower motor
is not controlled by the resistor, so when the resistor fails, the fan
will often work on the highest speed setting, but not the lower speeds.
To resistor is generally located under the dashboard and under the hood, near the blower motor .
The resistor's electrical connector is disconnected, the resistor is
removed and the new resistor is installed. On some vehicles it may be
easily accessible, and on others it may take partial dashboard removal
to replace the resistor.
Look under the hood, generally the wiring for the Blower resistor is attached to the wiring to the blower motor itself
It's inboard & below the motor, near the accumulator. You can see
it standing beside the passenger fender. it's the off-white connector
behind the L heater hose above the vacuum reservoir & the white
Feb 12, 2011 |
1993 Ford F350