While a simple cold snap can drain any battery, a dead battery in a diesel vehicle is often linked to the extra demands of the engine, such as issues with the glow plug system drawing excessive power or a failing alternator that cannot keep up with the charge required for the larger battery bank. A parasitic draw from faulty accessories or an improperly functioning charging system are also common culprits, and these require specialized diesel electrical diagnostics at RG Diesel, LLC to accurately locate and repair.

Visit RG Diesel LLC for a quick diagnostic and expert resolution of your brake system issue.

Flickering dash lights in a diesel engine often point directly to problems within the charging system, where the alternator is failing to provide a steady voltage, leading to fluctuations that affect all electrical components. This can be exacerbated in diesel trucks by high current draw from components like lift pumps or auxiliary lights. If ignored, a bad alternator will eventually stop charging the battery altogether, leading to a breakdown, so it requires immediate electrical system inspection at our facility.

A slow or misfiring starter motor in a diesel is usually a sign of insufficient power reaching the starter, which can stem from several areas. Most commonly, it's due to a weak battery that can't handle the high cranking amps required by a diesel engine, or it could be a failing starter solenoid or damaged wiring/corroded cables between the battery and the starter, which restricts current flow. Our diesel electrical experts can test the high-amperage components to pinpoint the precise failure.

The glow plug system is a critical electrical component in diesel engines, especially in cold weather, as it heats the air inside the combustion chamber to the temperature necessary to ignite the diesel fuel. If one or more glow plugs fail, the engine may become difficult or impossible to start, resulting in excessive white smoke or rough idling until the engine warms up. Because the glow plugs and their controller are purely electrical, any issues with starting often require our expert technicians to diagnose this system specifically.