Throttle Opener (3.0L)

Warm engine to normal operating temperature. Ensure idle speed is correct. See IDLE SPEED & MIXTURE in ADJUSTMENTS article in the ENGINE PERFORMANCE section.
Disconnect and plug vacuum hose at throttle opener, located on side of throttle body. Start engine. Maintain engine speed at 2500 RPM. Release throttle 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. Reinstall vacuum hose on throttle opener. Start engine and ensure engine returns to correct idle speed.

THROTTLE OPENER SPECIFICATIONS

Application

⁽¹⁾ Engine RPM

2.4L With A/T

2WD

900-1300

4WD

1000-1400

3.0L

900-1800

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

Fig 1: Checking Throttle Opener Vacuum Switching Valve (VSV)