See also:

Tachometer
The tachometer indicates engine speed in revolutions per minute (RPM). Do not rev the engine into the red zone 1 . When engine speed approaches the red zone, shift to a higher gear or red ...

If your vehicle overheats
If your vehicle is overheating (indicated by an extremely high temperature gauge reading), or if you feel a lack of engine power, detect abnormal noise, etc., take the following steps. ` ...

Under the Hood
Sentra 2.0 models come with one engine and two transmission choices. Mechanical features include: 140-horsepower, 2.0-liter four-cylinder with 147 pounds-feet of torque Six-speed manual or contin ...