A transmission range sensor, or TRS, sometimes referred to as a neutral safety switch, is a safety device and sensor that, when faulty, prevents the car from starting unless it is in neutral or park. Failure of this part... More »

Transmission temperature sensors are usually thermistors: resistors whose voltage varies with temperature. The range of such sensors is between -40 degrees and 210 degrees Celsius, according to the Clemson University Veh... More »

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Sound sensors work by detecting differences in air pressure and transforming them into electrical signals. Sound sensors such as microphones usually have built-in amplifiers that increase the strength of the incoming sig... More »

A dead battery, bad starter connection, faulty ignition switch and a clogged fuel filter are all factors that make a car hard to start. In cold weather, the slow evaporation of gasoline and coagulated oil also contribute... More »

Troubleshooting a power window switch depends on the problem with the window switch and involves replacing a faulty fuse, replacing faulty wires and replacing a worn-out regulator, which is a device that moves the window... More »

If a car will not turn over but the lights and radio still work, the problem is either a bad starter motor or a faulty ignition switch. A clicking noise when turning the key usually indicates a problem with the starter m... More »

Hard shifting in an automatic vehicle is typically the result of a faulty or failing transmission. An automatic transmission is comprised of gears, fluid, bell housing and a filter. Problems arising in any of these areas... More »