2006 Pontiac Torrent Repair Question
Why does my car overheat when idling and the air conditioner is on?
Lack of sufficient airflow across the radiator. Check to see if the secondary fan has power. If so, replace the secondary fan. If not, check the relays, fuse, and wiring.
The main fan only comes on when the engine reaches a certain temperature. The secondary fan is switched on when the AC is switched on, regardless of engine temp.
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