Lincoln Navigator: Engine / Engine Emission Control - 3.5L EcoBoost (272kW/370PS)
Removal
Remove the ignition coil-on-plugs.
Refer to: Ignition Coil-On-Plug (303-07 Engine Ignition - 3.5L EcoBoost (272kW/370PS), Removal and Installation)...
Item
Description
1
Differential pressure feedback EGR sensor.
2
EGR outlet tube.
3
EGR temperature sensor...
Other information:
Check
NOTE:
No factory-equipped vehicle should have more than a 25 mA
(0.025 amp) – 50 mA (0.050) draw depending on the vehicle's accessories.
Check for current drains on the battery in excess of 25 mA (0.025 amp) –
50 mA (0.050) with all the electrical accessories off and the vehicle
at rest for at least 75 minutes (depending on region)...
System Operation
Air Fuel Ratio Imbalance Monitor
The air fuel ratio imbalance monitor is an on board diagnostic strategy designed to monitor the air fuel ratio.
Air Fuel Ratio Imbalance Monitor — Heated Oxygen Sensor (HO2S) Monitor
The air fuel ratio imbalance monitor estimates the cylinder to
cylinder air fuel ratio difference using the universal HO2S
high frequency signal...