Hello. I am new to this forum. The electrical (auxiliary) fan on my 1970 280 SEL does not come on as the temperature rises in stop and go traffic or standing in gear. The car has AC and power steering.
My question is: What triggers the fan to come on? How can I check if whatever initiates it, is working properly?
(I unplugged the fan connection in the harness and verified that the fan itself is working.)
Your help is appreciated.