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.
Spark Control
Spark control allows the electronic control unit (ECU) to determine the exact instant that ignition is required, based upon information received from data sensors.
At the optimum time, the ECU breaks the primary circuit of the ignition coil, producing a high voltage at coil center tower. This voltage surge fires the spark plug at the proper time for most efficient combustion, eliminating the need for vacuum and/or centrifugal advance.
The DME system consists of 4 sub-systems.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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