Why would my AC\Heater blower motor continue to run after shutting off engine and removing key from ignition. It will also operate intermittedly on\off at random while driving down the road? When vehicle is off and blower is running, the speed of the fan cannot be changed by the fan speed switch i.e. the speed stays at a constant rate of whatever it was set at when vehicle is shut down.
Chevy S10 AC\Heater blower motor on 2000 Chevrolet S10
by jpgordy in Vicksburg, MS on November 14, 2010
2 answers 1 comment
ANSWER by mastertech6371 on November 14, 2010
blower resistor shorted to power. it is by the blower motor in the heater case. Roy
ANSWER by musicman2552 on March 14, 2011
are you you sure its the a/c and heater fan?the reason i ask is the a vehicle with a electric cooling fan not a belt driven fan will contue to run till the engine temp drops this fan if electric will also kick on even if the has not been run in awhile due to the abient temp reached a certian degree.
COMMENT by Visitor on March 15, 2011
yep it's the blower. it has a clutch fan system for radiator cooling. thanks for the feedback though.
The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the o...