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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 560 (SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM L3))NO. 12 LACK/LOSS OF POWER-ACCELERATION/CRUISENOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

No. 12 Lack/Loss Of Power-Acceleration/Cruise: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
POSSIBLE CAUSE DESCRIPTION

12 LACK/LOSS OF POWER - ACCELERATION/CRUISE
DESCRIPTION  Performance is poor under load (e.g., power down when climbing hills).
POSSIBLE CAUSE 
  • Improper A/C system operation
  • Erratic signal or no signal from CMP sensor
  • Air leakage from intake-air system parts
  • Improper Variable intake air system operation
  • Improper Variable tumble system operation
  • Improper operation of electronic throttle control system
  • Purge control solenoid malfunction
  • EGR valve malfunction
  • Brake dragging
  • Erratic signal from CKP sensor
  • Low engine compression
  • Vacuum leakage
  • Poor fuel quality
  • Engine overheating
  • Throttle body malfunction
  • Spark plug malfunction
  • Air cleaner restriction
  • PCV valve malfunction
  • Improper valve timing due to jumping out of timing chain
  • Improper variable valve timing control operation
  • Restriction in exhaust system
  • Intermittent open or short in fuel pump related circuit
  • Inadequate fuel pressure
  • Fuel pump mechanical malfunction
  • Fuel line restriction or clogging
  • Fuel leakage from fuel injector
  • Fuel injector clogging
  • Intermittent open or short circuit in MAF sensor, Accelerator position sensor, TP sensor and VSS
  • ATX malfunction (ATX)
  • Clutch slippage (MTX)
    WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system:
    • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
    • Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.

      (See BEFORE REPAIR PROCEDURE ).

      (See AFTER REPAIR PROCEDURE ).

    RENDER: 1.0x

    NO RELATED

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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.