Idle Speed

NOTE: On all EEC-V equipped models, idle speed is controlled by Powertrain Control Module (PCM) and is not adjustable. Idle speed specifications are for reference purposes only. If idle concerns exist, see TESTS W/CODES - 5.4L article. If no DTCs exist, go to TESTS W/O CODES article.

Turn off all accessories before checking idle speed. Ensure cooling system is filled to correct level. Ensure there are no vacuum leaks or unmetered air entering the throttle chamber on mass airflow design systems. If vehicle is equipped with electric cooling fan, check idle speed when fan is off. For engine idle specification see IDLE RPM SPECIFICATION table.

IDLE RPM SPECIFICATION

Application

⁽¹⁾⁽²⁾ RPM

A/T

800-850

⁽¹⁾	Idle speed is checked with engine warm and all accessories and fan off.

⁽²⁾	Idle speed is computer controlled and is not adjustable.