Emission System Application Chart

Engine Northstar 4.6L (279 cid) DOHC

Fuel System Sequential Multiport Fuel Injection (SFI)

DEVICES & SYSTEMS

CAT Three Way Catalyst
PCM Powertrain Control Module
EGR Exhaust Gas Recirculation System
[1][2]EVAP Evaporative Emission Control
FR Fuel Pipe Restrictor
OXY [1] Heated Oxygen Sensors
MRL [2] Maintenance Reminder Lamp
PCV Positive Crankcase Ventilation
IC Ignition Control

Remarks:

[1] 4 early, 3 later production, Heated Oxygen Sensors
[2] "Service Engine Soon" light