Tire Pressure Checks

Gauging accuracy: How accurate is that gauge?

Gauging accuracy: How accurate is that gauge?

Whether it's the bathroom scale or the car's gas gauge, we tend to believe what we see. Like it or not.

And more than 99 percent of the time, the gauges in our cars and trucks are accurate. They should be. Automotive gauges must meet strict standards set by the federal government, standards that can take years to develop.

However parts wear out. Electronic module programming is flawed. We mis-read an indicator. In other words, things can go wrong.

Naperville, Ill., resident Mark Bergren tells of a family van he "inherited" from his wife, Sue, when the heating function for the driver's seat no longer worked.

"I began using it and the van immediately...