Idle Speed & Mixture

NOTE: Idle mixture is not adjustable. If idle mixture is incorrect, see appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.

IDLE SPEED SPECIFICATIONS

Model

RPM

4.6L

640

5.0L

⁽¹⁾ 625

⁽¹⁾	For M/T vehicles, idle speed is 675 RPM.