Camry CNG & Gasoline Models, Camry Solara & RAV4

Start engine and warm engine to normal operating temperature. Ensure idle speed is within specification. See 4-CYLINDER IDLE SPEED under IDLE SPEED & MIXTURE.
With engine idling, disconnect and plug vacuum hose at throttle opener. See Fig 1. Increase engine speed to 2500 RPM. Release throttle and note engine speed. Engine speed should be 1300-1500 RPM with electric cooling fan off.
If engine speed is not within specification, loosen lock nut (if equipped) and rotate throttle opener adjusting screw until correct engine speed is obtained. See Fig 2. Tighten lock nut (if equipped). Reinstall vacuum hose on throttle opener.

Fig 1: Locating Typical Throttle Opener & Disconnecting Vacuum Hose (Camry CNG & Gasoline Models, Camry Solara & RAV4)

Fig 2: Adjusting Typical Throttle Opener (Camry CNG & Gasoline Models, Camry Solara & RAV4)