Dear Brian: I still have intermittant operation on my fan. Before I take it out, what to check? (Manual air and heat) The blower switch seems to operate at all speeds (when it blows) Other times, Nothing!Loose connection somewhere? I have heard about regulator problems , does this model have one? Appreciate any check points before I decide on motor replacement. a/c works fine (when blower works). All fuses checked, removed and replaced#2 and #6. I took apart plugs at firewall , cleaned with contact cleaner, replaced, same problem. Thanks again for you help. Abe G