I became a victim of the notorious intermittent fan motor operation. It was getting to the point I could predict it would NOT come on more than it would come on.

To test if it is actually the regulator or not is to use a meter and test for +6VDC on the center (white) wire of the fan plug to ground with the fan selector on five or it's highest setting. If you are getting the +6VDC but no power to the blower fan, then the regulator is defective and needs to be replaced.

I lucked out and it was misbehaving when I was testing it. If yours is working at that time, you may have to wait until another day to test it. The other way to tell is your HVAC Fan quits working randomly and then comes back on just as randomly.

The part was found at autohausaz.com

I've made a quick video of the replacement process. It's a bit over 10 minutes.


Enjoy!