How do you adjust the idle speed on a Lancer?

To adjust the idle speed on a Mitsubishi Lancer, first, ensure the engine is at operating temperature. Locate the idle air control (IAC) valve or the throttle body, depending on the model year. You can then either adjust the idle speed screw on the throttle body or use the vehicle's onboard diagnostics to set the idle speed electronically. Always refer to the specific service manual for your Lancer model for precise instructions and specifications.