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.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 25 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)IDLE CONTROL SYSTEMSYSTEM CHECK (EXCEPT 626)
2008 Mazda 6 s Sport, 4D Hatchback, Standard
System Check (Except 626)
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION System Check (Except 626)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure engine is at ambient temperature. Connect NGS scan tool. Using PID/DATA monitor and record function, select ECT and RPM PIDs. Start engine.
- Engine speed should decrease as engine reaches operating temperature. If engine speed does not decrease or decreases slowly, check ECT sensor, IAC valve and related wiring.
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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.