Your vehicle's crankshaft sensor can be, well, cranky. But it's also a key part you can't do without. So what makes one fail? And how do you know if it's bad?

The thing is, a bad MAP sensor won't always trigger a check engine light or cause the computer to register a DTC (diagnostic trouble code). Diagnostics ...

A faulty MAP sensor will usually trigger a “check engine” warning light. Other signs of a bad MAP sensor include rough idling, sluggish acceleration or hesitation, poor fuel economy or black ...