Operation CHARM: Car repair manuals for everyone.

Idle/Throttle Speed Control Unit: Adjustments

Tachometer Connections:




Adjusting Idle Speed:






1. Run engine until operating temperature is reached.
2. Turn all accessories "OFF."
3. Connect a tachometer to the IG terminal in the diagnostic connector.
4. Adjust idle speed by turning the adjusting screw. Refer to SPECIFICATIONS for proper value.