nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Engine Controls - Engine Idle Speed 25RPM Too High|Page 6957 > < Engine Controls - Engine Idle Speed 25RPM Too High|Page 6955
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Idle Speed: Testing and Inspection

Basic Service Procedure
PREPARATION

1. Make sure that the following parts are in good order.

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Battery

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Ignition system

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Engine oil and coolant levels

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Fuses

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ECM harness connector

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Vacuum hoses

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Air intake system
(Oil filler cap, oil level gauge, etc.)

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Fuel pressure

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Engine compression

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Throttle valve

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Evaporative emission system

2. On air conditioner equipped models, checks should be carried out while the air conditioner is "OFF".
3. On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio, checks should be carried out while shift

lever is in "N" position.

4. When measuring "CO" percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5. Turn off headlamp, heater blower, rear window defogger.
6. Keep front wheels pointed straight ahead.

Engine Controls - Engine Idle Speed 25RPM Too High|Page 6957 > < Engine Controls - Engine Idle Speed 25RPM Too High|Page 6955