Skip the auto shop - Our mechanics make house calls

Q: What does the tachometer tell you?

asked by on

What does the tachometer tell you?

A: The gauges in the center of your dash provi...

The gauges in the center of your dash provide you with some pretty important information. The tachometer is designed to show you how fast your engine is turning, which is measured in revolutions per minute, or RPM. Note that this is tied to vehicle speed, but is not the same. It’s more closely related to transmission operation.

The gauge shows a ring of numbers from 0 to 8, measured in 1,000s. For instance, if the needle were sitting at the 3 mark, it would mean that your engine was turning 3,000 times per minute.

If the needle edges into the red zone, it means that the engine is starting to turn dangerously fast. Take your foot off the gas, or shift to a higher gear to slow it down. It may also indicate a problem with the transmission.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Q: How do I use the auto down window?

If your vehicle is equipped with the auto down window, then you can roll the driver’s window down all the way, with only a quick button press. To use the auto down feature, press the driver’s Power Window switch down...

Q: Bad gas mileage on a 2006 Ford Escape V6 3.0

Generally, if you have a really bad gas mileage on those things, if it's running okay and not misfiring, it's one of two things. Either the MAF sensor is bad so you might just buy a MAF sensor. Try...

Q: My compressor went out. Will that cause my engine to not operate?

Hello. If you have an engine that is cranking but not starting, then you need to look on dashboard to see if the theft light is flashing first. If it is, then try a different key to see if that...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...