Engine Idle Adjustments
Air/Fuel RatioAdjustment specification [1] 0.7%
Checking limits 0.3 - 1.2%
IDLE SPEED [1]
When Hot 750 - 850 RPM
IGNITION TIMING [1]
2250 ± 50 RPM Coolant temperature sensor disconnected
Checking 4° - 8° BTDC
Adjust to 6° - 1° BTDC
FIRING ORDER 1 - 3 - 4 - 2
Oxygen Sensor
Torque 37 ft.lbs (50 Nm.)
[1] Ignition timing, idle speed and CO need to be adjusted together to prevent driveablity problems. For complete procedure, see COMPUTERS AND CONTROL SYSTEMS/ADJUSTMENTS. Adjustments
Clear fault memory codes after disconnecting and reconnecting the coolant temperature sensor. If the base ignition timing has been changed, the control unit must be returned to reference settings. Refer to COMPUTERS AND CONTROL SYSTEMS/ENGINE CONTROL MODULE/ADJUSTMENTS Adjustments