Q: How does the tachometer work?

asked by on December 14, 2015

How does the tachometer work?

Your central gauge cluster shows you a wide range of important information about your car, your engine and your transmission. The tachometer tells you a couple of things. First, it shows how rapidly your engine is turning, which is measured in revolutions per minute, or RPM. Second, it shows you when the engine is getting close to critical speed – the red sections at the upper end of the dial.

Tips

  • The engine’s RPM will change as the transmission shifts gears.

  • Do not let the needle move into the red section of the gauge. This is dangerous and can lead to engine damage.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Engine noise when cranking. P0011 and P0021 codes

Hi there. The P0011 OBD-II error code indicates that you have an over advanced timing issue, which might be the reason why your engine stumbles for a brief moment when it's cold and first starts. Ignition timing is typically monitored...

Car is not starting

Hi. In a no start situation, there are always a few items that would need to be looked at. The first thing that is generally done is to read out any trouble codes in the engine computer. If codes are...

Engine will not idle, no power and sometimes it dies while driving

Hello there, many common faults will cause your Nissan Sunny to die while running and idle poorly. Without knowing the exact year I can only give a general answer to your question. The most likely faults for a rough idle...

Related articles

2012 Hyundai Sonata vs. 2012 Hyundai Elantra: Which One Should I Buy?
Mid-size sedans are a large category. These vehicles are well suited for either a large commuter car that is not going to get quite commuter car statistics as far as gas mileage or a smaller sedan option. Think of mid-size...
A Buyer’s Guide to the 2012 Mazda 3
The The compact car class is definitely a competitive one, with established models like the Toyota Corolla and Honda Civic taking up a lot of the market every year. However, if you’re looking for a really attractive compact sedan or...
The Top 5 Selling Cars in Arkansas in 2012
Arkansas, Arkansas, like many other states, has to deal with a wide range of weather, from the stifling to the icy. This means drivers need vehicles that can handle the heat while also helping them get through slippery conditions. In...