I have a 97 outback with a 2.5L. I have been having some overheating issues with the vehicle. I checked fluid level, bubbles, etc. The t- stat, head gaskets, water pump, and hoses have all been replaced about
15k miles ago. I started test driving and pulled over to check hose vacuum while the engine was overheating and noticed that neither fan was running. After returning home, i tested all relays and they seemed to work fine. The last thing i checked was the sub-fan. With the car idling, i turned on the A/C and both fans started right up. After cursing a few times and kicking the tire, I turned to the internet.
Why will the fan come on when the A/C is engaged, but not when the car is overheating???
I hope someone knows what is going on.