Many modern-day fuel systems offer a new look into system status definitions. It’s become very important to extend our understanding well beyond the concepts of simple "open loop" and "closed loop" ...

It is a moral dilemma that many shops encounter on a regular basis. It starts when a good customer comes in with the check engine light ablaze. Running your usual diagnostics, you encounter a ...

When gas powered cars get older the catalytic converter, or converters if you have a V style engine, can lose their efficiency and set off a CEL, or check engine light. P0420 is a code for a failing ...