Are both cooling fans supposed to be running when the air conditioner is on in a 1994 Oldsmobile Cutlass Ciera?

In a 1994 Oldsmobile Cutlass Ciera, with the A/C on, only one cooling fan usually runs at lower speeds. The second fan kicks in at higher temperatures or under heavier loads to help dissipate heat from the radiator more effectively. It's a staged system to save energy.

It's not unusual for *both* to run under high demand conditions (e.g., sitting in traffic on a hot day, or immediately after driving hard). However, if *both* fans run constantly at low speed even when the engine is only mildly warm, that might indicate a problem with the cooling system, the fan control module, or a sensor.