In this video, we explain car engine sensors, detailing their functions, operations, locations, and effects of malfunctions.

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

To fully grasp the magnitude of what could happen when an engine's crankshaft and camshaft sensors go haywire, we need to summarize the roles of those sensors during the motor's operation. The ...