Test KE: Step 16

16) Check For Conditions Affecting Idle Speed  Check the following mechanical components for faults:

• Engine vacuum hoses (refer to emission decal)
• Throttle linkage and/or cruise control linkage for sticking or binding
• Ensure throttle plates are fully closed
• Check for vacuum leaks in induction system
• Check throttle body for contamination
• Ensure base ignition timing is to specification on emission decal (TFI vehicles only)

If all above checks are okay, go to next step. If a fault has been found, service as necessary and rerun QUICK TEST.