Posts tagged ‘camaro’

Warning Gauges are Usually Center Normal

By Chad Upton | Editor

Even if you don’t know anything about cars, this can help you spot a problem, even if you don’t know what it is.

Virtually every car has a speedometer and a fuel gauge and you can obviously read those gauges. Many cars also have a tachometer; it measures the engine speed in revolutions per minute (rpm). This can help you understand when to shift gears and when you’re burning the least/most fuel.

Some cars have other gauges too. Generally speaking, the needle on most of these other gauges should be near the middle of the gauge when the vehicle is operating normally. Depending on the gauge, it will usually have a red mark on one or both sides of the gauge, indicating trouble if the needle reaches that mark.

Some of these gauges take a few minutes to settle near the center, particularly the various temperature and pressure gauges that may appear in some vehicles.

These are called center normalized gauges and have been a popular gauge design standard for a long time. With so many in-car distractions, simplifying gauge design makes it easy to identify a problem.

In racing some drivers even tape over the sides of the gauges, leaving on the center visible — then they can only see the needle when it is in the center position, making it even easier to identify a problem.

One of the most popular additional gauges is the engine coolant temperature gauge. It is identified by a symbol that looks like a thermometer partially submerged in liquid. This gauge indicates when your engine is overheating.

The following gauges are not exactly warning gauges, so they’re exempt from the center normal rule: speedometer (mph or km/h), tachometer (rpm), fuel, and turbo (boost).

Of course, not all cars use center normal gauges, but you’ll be able to tell a few minutes after your car has been running normally.

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Sources: Answers.com, umich.edu

Photos: Photo courtesy of Aaron Gold at _cars.about.com_, rastrus (cc)

August 2, 2010 at 5:00 am 2 comments


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