HEATER/A/C FAN
Heater and A/C fan speed fluctuates at all settings. Recently replaced the resistor, worked fine for 4 months. Recently fan motor speed began fluctuating at the higher speed settings. In other words if you put it on max it goes max for a few minutes, then gets slower, faster at random and may even stop. If you turn off the fan for a few minutes it seems to return to normal most of the time. One time did not go back on.
Any ideas? Fan does now sound different.
thank you,