Suddenly my heater fan only works on high speed. What could be the problem? on 2000 Dodge Stratus

Immediately prior to this happening the wipers failed to operate until I shut them off and turned them back on, wipers work fine now.

by in Ashburnham, MA on February 10, 2013
2 answers 2 comments
ANSWER by on February 10, 2013
Sounds like the fan speed relay is giving you the problem. This is the part that contols the speeds of the blower motor by changing the resistance or the power going to the motor. It could also be the speed control switch on the control head but the resistor is the most common problem.
COMMENT by on February 11, 2013
Thanks!
ANSWER by on February 10, 2013
maybe your blower motor resistor is not good
COMMENT by on February 11, 2013
Thanks!