The actual blower fan/motor seems to be intermittent -- maybe I wasn't clear. Sometimes it won't come on at all, at least automatically. Sometimes it comes on and is OK. Most of the time it seems to be stuttering. I can always make it rush air if I manually put the fan speed to its highest setting. If I go back to AUTO, it's hit or miss, stutters, and sometimes cuts out altogether. It never comes back on of its own, without my provoking it with manual fan speed override.
So if that's not the regulator, what do you recommend? Gotta have some cool air this time of year!
Cheers, John