Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Glow Plug System
Engine starting is aided by a solid state glow plug system. Function of this system is to pre-heat the combustion chamber to aid ignition of fuel.
System consists of 8 glow plugs, controller module, power relay, "WAIT TO START" indicator light and a wiring harness. Power relay is mounted on top of controller module circuit board. Complete assembly is mounted to rear of intake manifold.
Glow plugs are threaded into each combustion chamber. Glow plugs are small heaters that assist in cold starting. The glow plug controller and relay cycle 12 volts to these 6-volt heaters, which causes them to heat rapidly. After the engine starts, the glow plugs remain on between 4 and 10 seconds during initial starting cycle.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.