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.
Combustion Control Computer: Description: Notes
The Combustion Control Computer (CCC) system is used on Imperial models with Electronic Fuel Injection. The computer controls the EFI system, spark timing and advance, idle speed, air injection switching and fuel evaporation purging.
The system is capable of self-calibration to compensate for changes in altitude or barometric pressure. It also has safety features that enable it to shut down the fuel supply pump if the engine stalls or will not start after prolonged cranking.
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.