Only one radiator fan running at high temp on 1999 Dodge Stratus

Hi, when i am running my air condition only 1 FAN runs at high RPM. I checked & replaced the relays. Both fans runs when the car is not hot & air condition is not running.
Is this normal? BTW, my car heats up if idle for too long?
Any suggestions..

1 answer
Hi, were you able to figure out what was causing the fans to operate like this?