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Home >> Mazda >> 2005 >> 6 s, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting (Engine Control System AJ) >> 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 at fast idle after warm-up.
  • Engine runs after ignition switch is turned to OFF position.
POSSIBLE CAUSE 
  • ECT sensor malfunction
  • Air leakage from intake-air system
  • Throttle body malfunction
  • APP sensor misadjustment
  • Cruise control system operation improperly
  • Improper operation of electronic throttle control system
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