I pulled the blower motor and plugged it back in and it does not turn, there is electrical current in one of the wires that connect to the motor, I was able to get the motor to jog about a 1/4 of a turn by putting jumper wires to it, by doing this a second time it reversed rotation and turned about 1/4 of a turn in the oppisite direction. Does it mean the motor is bad?
Heater blower motor not coming on on 1997 Cadillac DeVille
by Payday in Albany, OR on March 03, 2010
2 answers 1 comment
ANSWER by Bret Bodas , March 03, 2010
Sounds like a bad motor. You should be able to turn the motor by hand very easily, if it is not turning or feels rough, replace the motor.
COMMENT by Payday , March 03, 2010
The motor turns freely by hand with no roughness or noise at all. How can I test the heater motor? UPDATE; Found used heater motor for $45, salvage yard let me take and plug it in and return if it didn't work, it did work and I now have the heater working back to normal.
ANSWER by Visitor , February 19, 2011
check the motor brushes if you can get to them