My wife’s commuter car is a 1997 Acura CL 4-cyl with 238K plus miles.
After cleaning the IAC valve because of rough idling I noticed that both engine cooling fans are always running when the climate control is set to heat or A/C or something in between. I know with A/C on the fans are running, but I was surprised to see them running when any setting of the climate control is turned on. This is regardless whether or not the engine is cold or hot. With the climate control turned off the fans will also turn off (unless they are running because of a hot engine).
I worked on the car before and don’t recall seeing the fans on at all times. Is this normal?
Btw, cleaning the IAC fixed the rough idling.