FixVault

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