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HOMESERVICE MANUALSMAZDA2013MX-5 MIATA GRAND TOURING, AUTOMATIC TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISSYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM LF 2.0L]NO. 12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [LF]
2013 Mazda MX-5 Miata Grand Touring, Automatic Trans

No. 12 Lack/Loss Of Power-Acceleration/Cruise [LF]

2013 Mazda MX-5 Miata Grand Touring, Automatic TransSECTION No. 12 Lack/Loss Of Power-Acceleration/Cruise [LF]
12  LACK/LOSS OF POWER-ACCELERATION/CRUISE 
DESCRIPTION 
  • The performance is poor under load (such as power down when climbing hills).
POSSIBLE CAUSE 
  • Electronic throttle control system operates with brake override system
  • Improper A/C system operation
  • Erratic signal or no signal from CMP sensor
  • Air leakage from intake-air system parts
  • Restriction in intake-air system
  • Intake air temperature too hot
  • Improper variable intake air control operation
  • Improper operation of electronic throttle control system
  • Purge control solenoid malfunction
  • Improper EGR valve operation
  • Brake dragging
  • Erratic signal from CKP sensor
  • Low engine compression
  • vacuum leakage
  • Poor fuel quality
  • Erratic signal to ignition coif
  • Engine overheating
  • Throttle body malfunction
  • Spark plug malfunction
  • PCV valve malfunction
  • Improper valve timing due to jumping out of timing belt
  • Improper variable valve timing control operation
  • Restriction in exhaust system
  • Intermittent open or short in fuel pump related circuit
  • inadequate file) pressure
  • Fuel pump mechanical malfunction
  • Fuel line restriction or clogging
  • Fuel leakage from fuel injector
  • Fuel injector clogging
  • Erratic signal from APP sensor
  • Erratic signal from TP sensor
  • Intermittent open or short circuit in MAF sensor, APP sensor, TP sensor, IAT sensor and VSS
  • AT malfunction (AT)
  • Clutch slippage (MT)
    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 SERVICE PRECAUTION [LF] " and "AFTER SERVICE PRECAUTION [LF] ".
    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.