Operation CHARM: Car repair manuals for everyone.

B13: Auxiliary Air Valve

Auxiliary air valve

Operation B13
Applies only to engines without constant idle speed system (CIS)

B13



Check that the auxiliary air valve open
The valve should be partly open at room temperature.

Completely open at -30°C (-22°F), and completely closed at +70°C (158°F)

Use a pen light to check the valve. Replace if defective.

Connect the plug to the valve.