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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do you use the SYNC® system hands-free feature?

SYNC® is Ford’s on-board computer system. It’s designed to offer a wide range of functionality, from navigation to hands-free calling. Here’s how the steering wheel controls works: Press the Talk button. You should hear a chime/tone. The word “Listening”...

Q: How do you use the automatic rearview mirror in a 2012 Ford Escape?

If your car is equipped with an automatic dimming rearview mirror, you have a convenient way to reduce the glare from cars behind you without having to do anything yourself. The mirror does it on its own. The automatic...

Q: Engine mifiring at higher RPMs, tachometer spiking up

Try to replace the ignition module and coil which is mounted top right side of the motor. The ignition module supplies the tach signal and the coil supplies the spark to the plugs. It is a good idea to replace...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.