In the January issue, we discussed the history of OBD. This time we are going to investigate some of the technology required to meet OBD II standards. To give an idea of the magnitude of technological ...

Cylinder misfires can turn a smooth commute into a rough, fuel‑wasting slog, and they almost always leave a trail of diagnostic clues if you know where to look. I focus on four of the most common ...

Your crankshaft position sensor is small but mighty—without it, your engine can’t start or run right. Learning to test, diagnose, and interpret its signals can save hours of guesswork. From waveform ...