Where is the heater control valve located on a 2001 eclipse?

On a 2001 Mitsubishi Eclipse, the heater control valve is typically located in the engine compartment, near the firewall on the passenger side. It's usually connected to the heater hoses that run to the heater core. You may need to remove some components for easier access, but it can generally be found close to where the hoses enter the cabin. Always refer to a repair manual for specific guidance and diagrams.