Modern engines need to not only know the position of the crankshaft, but the position of the camshafts.
When the rings separate, the alignment of the belts change. This video is sponsored by Auto Value and Bumper to Bumper.
Modern engines need to know the position of the crankshaft and camshafts. Why? The timing of the valves, fuel injectors and ignition coils are continually optimized for the most efficient combustion event depending on the load and speed of the engine. But the other reason for knowing the position of the crankshaft is for misfire detection.
Andrew Markel discusses misfire codes, and how the camshaft and crankshaft position sensors detect rotational anomalies to set them. Sponsored by Auto Value and Bumper to Bumper.
Andrew Markel goes over how crank and cam position sensors can fail or send codes due to corrosion, and what to watch for in the voltage before replacing them. Sponsored by Robert Bosch.
When doing mobile diagnostic work, no-code stalling complaints are a major part of your agenda. In most cases, the client shop is simply too busy to duplicate the failure or, in some cases, a long test drive will yield nothing in the way of useful scan tool data. With many no-code stalls, all you’re going