There are numerous sensors, belts, vacuum hoses, and gears that make your motor run. If any of these pieces are malfunctioning, you can count on your engine performing badly. A timing belt, for example, can slip just a half a tooth and lead to heavy chugging and a huge loss of power.
If the crankshaft sensor is damaged, the vehicle won't even start. Yet, this error can be tricky because it usually doesn't throw any perceivable code to pick it up with a diagnostic scan tool. In addition, you can have oil pressure problems, coking from burnt oil, sludge, and numerous other problems that can melt your engine overnight.