NSX V6-3.0L DOHC (VTEC) (1998)
Idle Speed: Adjustments
NOTE: Before setting the idle speed, check the these items:
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The MIL has not been reported on.
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Ignition timing
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Spark plugs
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Air cleaner
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PCV system
1. Start the engine. Hold the engine at 3,000 rpm with no load (A/T in [N] or [P] position, M/T in neutral) until the radiator fan comes on, then turn
the ignition switch OFF.
2. Connect the SCS service connector to service check connector.
3. Connect a OBD II scan tool or tachometer.
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Connect a tachometer to loop of igniter unit secondary, or...
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Remove the rubber cap from the tachometer connector and connect a tachometer.
4. Restart the engine.
5. Check idling in no-load conditions in which the headlights, blower fan, rear defogger, cooling fan, and air conditioner are not operating. Do not
depress the accelerator pedal.
Idle speed should be:
M/T: 600 ± 50 rpm.
A/T: 600 ± 50 rpm (in [N] or [P] position)