When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...

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 ...

The ignition control module is a crucial component of a vehicle's ignition system. It is a control unit responsible for regulating the ignition timing and generating sparks to ignite the fuel-air ...

A purge valve is a vital component of a vehicle's evaporative emission control (EVAP) system. Its function is to control the flow of fuel vapors from the fuel tank and evaporative canister into the ...

When Ford (in conjunction with International) converted the 7.3L IDI engine from mechanical to the hydraulically actuated electronically controlled unit injection (HEUI) system, the Power Stroke brand ...

An electronic control unit is a device responsible for overseeing, regulating and altering the operation of a car's electronic systems. Each of a car's electronic features, such as an anti-lock ...

There was a time when many 4WD enthusiasts were afraid of electronic fuel injection (EFI) on engines, preferring the “relative simplicity” of a carbureted engine that could be run in a pinch with ...

While the 5.3L LS4 V8 was the first car engine to feature Active Fuel Management (cylinder deactivation) technology, it was not Flex Fuel capable and did not have variable valve timing. As mentioned, ...