Glow plug control modules Glow plug control modules work hard to ensure your diesel car starts, but what else do you know about them? For example, do you know how they work? How to choose the right glow plug control module for your vehicle? Or how and when to replace them? What is a glow plug control module? As you already know, a glow plug is a heating device in each cylinder of a diesel engine that helps the engine start. But how is the overall operation of your glow plugs monitored and controlled? A glow plug control module does this. Located on the engine and directly connected to the engine control unit, the control module uses a microprocessor to … Continue reading Glow Plug Control Modules and How to test glow plugs