Nissan Altima Owners Manual: Tachometer

The tachometer indicates engine speed in revolutions


The tachometer indicates engine speed in revolutions per minute (rpm). Do not rev engine into the red zone 1 .

CAUTION

When engine speed approaches the red zone, shift to a higher gear or reduce engine speed. Operating the engine in the red zone may cause serious engine damage.

    Speedometer and odometer
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    Engine coolant temperature gauge
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    Other materials:

    P0507 ISC System
    Description The ECM controls the engine idle speed to a specified level via the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine idli ...

    Self-diagnosis function
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    Tire Pressure Monitoring System (TPMS)
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