A car that cranks but will not start is stressful. A car that starts, stalls, throws random codes, and then acts fine for ten minutes is worse. That is the kind of problem that makes people replace sensors, coils, batteries, and modules before they look at the part tying all of those pieces together: the engine wiring harness. The engine wiring harness is the organized bundle of wires and connectors that carries power and signals between the engine, sensors, ignition system, fuel system, alternator, transmission-related components, and engine control module. When it is healthy, you never think about it. When it is damaged, your car can feel haunted by electrical problems that do not point to one obvious part. The...
Learn the common signs of a bad wheel hub assembly, how it connects to the spindle or steering knuckle, and what to verify before buying a used OEM replacement.