OK, I changed the fans option to 2 fans and now I am getting a on off signal from the pcm.
The relay, which I checked with a rocker switch to assure it worked, it simply opening and closing contacts every 1/2 second or so, but will not keep the relay triggered to keep the fan on.
I thought maybe I was at the low end threshold for getting the fan to come on, but I let the ect rise to about 210 and the pcm signal kept clicking on/off every 1/2 second.

What could that be?


Thanks again