When you turn on your heater in your 97 explorer the car wants to stall?

If your 1997 Explorer wants to stall when you turn on the heater, it could be due to a few reasons. One common issue is a vacuum leak; the increased load on the engine when the heater activates can reveal a problem in the vacuum system. Another possibility is an issue with the idle air control valve, which may not be adjusting the idle speed properly under load. Lastly, a weak battery or alternator could also struggle to provide enough power when the heater is activated, affecting engine performance.