Adjusting Idle Speed on Montero Sport XLS 4WD V6-30L for Optimal Engine Performance
Idle Speed: Adjustments
Basic Idle Speed Adjustment
BASIC IDLE SPEED ADJUSTMENT
Required Special Tool:
MB991502: Scan Tool
NOTE:
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The standard idling speed has been adjusted with the speed adjusting screw (SAS), by the manufacturer. There should be no need for readjustment.
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If the adjustment has been changed by mistake, the idle speed may become too high or the idle speed may drop too low when loads A/C, defogger,
etc. are placed on the engine. If this occurs, adjust by the following procedure.
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The adjustment, if made, should be made after first confirming that the spark plugs, the injectors, the idle air control motor, compression, etc., are
all normal.
1. The vehicle should be prepared as follows before the inspection and adjustment.
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Engine coolant temperature: 80- 95 °C (176 - 203 °F)
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Lights and accessories: OFF
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Transmission: Neutral (A/T for P range)
2. Connect scan tool MB991502 to the data link connector (16-pin).
NOTE: When scan tool MB991502 is connected, the diagnostic test mode control terminal should be grounded.
3. Start the engine and run at idle.
4. Select the item number 30 of the scan tool Actuator test.
NOTE: Use the scan tool to hold The IAC motor at the basic step to adjust the basic idle speed.
5. Check the idle speed.
Standard value: 700 ± 50 r/min
NOTE:
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The engine speed may be 20 to 100 r/min lower than indicated above for a new vehicle [driven approximately 500 km (300 mile) or less], but
no adjustment is necessary
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If the engine stalls or the engine speed is low even though the vehicle has been driven approximately 500 km (300 mile) or more, it is probable
that deposits are adhered to the throttle valve, so clean it.
6. If not within the standard value range, turn the speed adjusting screw (SAS) to make the necessary adjustment.
7. Press the scan tool clear key, and release the IAC motor Actuator test mode.
