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Home >> Mazda >> 2005 >> 6 i, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting (Engine Control System L3) >> No. 9 Fast Idle/Runs On >> Notes

No. 9 Fast Idle/Runs On: Notes

DESCRIPTION & POSSIBLE CAUSE

9 FAST IDLE/RUNS ON
DESCRIPTION 
  • Engine speed continues during fast idle after warm-up.
  • Engine runs after ignition switch is turned off.
POSSIBLE CAUSE 
  • ECT sensor malfunction
  • Air leakage from Intake-air system
  • Throttle body malfunction
  • Accelerator position sensor misadjustment
  • Cruise control system operation improperly
  • Improper load signal input
  • Improper operation of electronic throttle control system