Air/Fuel Mixture: Adjustments

CAUTION: Some models are equipped with a factory adjusted throttle plate position set screw. Never attempt to adjust idle mixture using this screw!

- Idle mixture is electronically controlled by the Engine Control Module (ECM), and is NOT adjustable.

- If an idle mixture problem is suspected, check oxygen sensor and ECM system.


Oxygen Sensor

THEN SEE:

Engine Control Module