Tacky or Techie? The Tachometer.Posted August 11, 2019 3:03 AM
There's a gauge that many vehicles have that says RPM on it. And there are a lot of people who either don't pay any attention to it or don't even know what it is. Here's why it's a good gauge to know about.
It's called a tachometer, and that "RPM" label means it is measuring how many revolutions per minute (RPM) the engine is turning. Automotive experts know that a vehicle's engine can be damaged if it turns too fast (revving too high) or too slowly ("lugging" the engine).
A tachometer (sometimes called a tach) is almost a "must-have" gauge for vehicles with a manual transmission; the driver has to manually change gears; the tach helps the driver know when revolutions are in the optimal range.
Some say you don't need a tachometer if you drive a vehicle with an automatic transmission. It's true that most drivers of automatics don't even look at it. But there are times when paying attention to the tach can help you prevent an expensive repair.
Here's a good example. Manufacturers now build many of their automatic transmission vehicles with shift paddles. They let you shift gears without a clutch. That's manual shifting, and drivers need to know they're not revving the engine too high. That's where the tachometer comes in, since it shows you visually when you are in the red zone (RPM too high).
Here's another way the tach can help you: fuel economy. Generally speaking, the lower the RPM, the better the fuel economy. It's not good to go too low, of course, and the tachometer will help you find that spot of maximum efficiency.
You can also spot problems by paying attention to the tach. When your vehicle stays in first gear longer than usual (higher reading on the tach), then the RPM dip lower than usual after shifting, it may be that your vehicle's transmission is skipping a gear. Plus, if your vehicle's RPM go up but your speed doesn't, it could mean your transmission is slipping. Either situation should be checked by a trained technician.
If your commute takes you down some long grades, you might like to put your vehicle in a lower gear to help slow down the car (and not burn up the brakes). Having a tachometer keeps tabs on when your engine is revving too high.
So, consider the tachometer a "bonus" gauge. It's one more helpful assistant that can help you spot and prevent problems in your vehicle.
Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
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I work not far from the station. This week myself and another co worker both had blown out tires like back to back. This service station took care of us and were very reasonable in price.
Joe D'Aurias Auto Service Mechanics' are excellent. They are very attentive to your work schedule. They contact the insurance or warranty companies. Their diagnostic and service process is extremely fast!
One of the few honest mechanics
Good service. Good people.
Extremely accommodating business and employees! Perfectly located off main highways!
I've been here half a dozen times with minor problems with my car. One or twice Joe topped off my fluids for free. A patched tire was ridiculously cheap. They are fast and friendly and very reasonably priced. Excellent!
The service is excellent and very fair in price. They have always been available for me when service is needed. Again a repeat return and excellent service!
Reasonably priced, professional, and didn't try to up sell me.
Best place to get your car worked on. These guys know what they?re doing and are always fair and affordable.
They will always take care of you and have very fair prices.