Skip the auto shop - Our mechanics make house calls

Q: What does the tachometer gauge tell you on the dash?

asked by on

What does the tachometer gauge tell you on the dash?

A: One of the most important gauges to keep yo...

One of the most important gauges to keep your eye on when you’re driving, the tachometer shows you how fast the engine is turning. Engine speed is measured in revolutions per minute (RPM). The gauge runs from 0 to 7 (x 1000). If the engine is off, then the gauge sits at the 0 mark. During idling, it should move up slightly.

As you press the gas pedal, the tachometer needle will move up the gauge, although it will drop with each transmission shift. However, if the needle edges into the red section of the gauge, that’s your signal to slow down (or that something’s wrong, such as your transmission not shifting correctly). Driving for any length of time with the needle in the red is not recommended, as it could seriously damage the engine.

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 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...

Q: I want to know which 5speed Transmissions are compatible with my setup

You need interchange data...try inputting your particulars into www.car-part.com. Also try posting to the Ford Bronco "users groups" on the internet. If you look for a vendor of the rebuild kit for your existing transmission that vendor, if they do...

Q: How do I use repeat mode when playing music off of a USB drive?

Using repeat mode is the same on your USB drive as it is when you use an iPod with a USB cable: Rotate the Menu or Menu/Sel knob until it highlights Repeat, then press the knob. Use the Menu...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.