Throttle Opener

Warm engine to normal operating temperature. Ensure idle speed is correct. See IDLE SPEED & MIXTURE in ADJUSTMENTS article.
Disconnect and plug vacuum hose at throttle opener, located on side of throttle body. Start engine and note engine speed. Engine speed should be within specification. See THROTTLE OPENER SPECIFICATIONS table.
Replace throttle body if engine speed is not within specification. Shut engine off. Reinstall vacuum hose on throttle opener. Start engine and ensure engine returns to correct idle speed.

Fig 1: Adjusting Throttle Opener (Camry 2.2L Shown; Others Similar)

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THROTTLE OPENER SPECIFICATIONS

Application

⁽¹⁾ Engine RPM

Land Cruiser

700-1000

⁽¹⁾	With electric cooling fan turned off (if equipped).