MPV ES V6-2.5L DOHC (2001)
Air/Fuel Mixture: Testing and Inspection
ENGINE TUNE-UP
Engine Tune-up Preparation
1. Warm up the engine to normal operating temperature.
2. Shift the transaxle into neutral.
3. Turn off all electrical loads.
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Headlight
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Blower fan
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Rear window defroster
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A/C
4. Verify that the steering wheel is in the straight ahead position.
5. Connect the SST (NGS tester) to the DLC-2 and select "PID DATA MONITOR AND RECORD".
Idle Mixture Inspection
1. Perform "Engine Tune-up Preparation".
2. Verify that the idle speed and ignition timing are within the specification.
3. Warm up the engine by holding the engine speed at 2,500 - 3,000 rpm for approx. 3 minutes.
4. Insert an exhaust gas analyzer to the tailpipe.
5. Verify that the CO and HO concentrations are within the specified limits.
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If not within the specified limits, inspect the following:
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On-board diagnostic system
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HO2S
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Intake manifold vacuum
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Fuel line pressure
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Ignition timing control
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If the systems and devices are normal, replace the TWC.