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Other Systems

Learn about the various electrical and other systems that lurk under your hood, including cooling systems, ignitions, wires, fuses and connectors.

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How does a positive crankcase ventilation (PCV) system work?

Just seeing the phrase "positive crankcase ventilation" probably makes your head hurt, because it sounds, well, complicated. But it really isn't all that complex.


How does the thermostat in a car's cooling system work? I had to test my thermostat today and was amazed as I watched it! See more »

The battery light on my car dashboard comes on whenever I am driving. How serious is this? The car seems to be working fine... See more »