Excessive Emissions/Fuel Consumption

POOR FUEL ECONOMY
^ Air Mass Meter
^ Coolant Temperature Sensor
^ Shorted Oxygen Sensor Probe
Computers and Control Systems

^ Fuel Pressure Regulator
Testing and Inspection
Also, Fuel Pressure Regulator

ENGINE RUNS TOO RICH
^ Air Mass Meter
^ Coolant Temperature Sensor
^ Shorted Oxygen Sensor Probe
Computers and Control Systems

^ Fuel Pressure Regulator
Testing and Inspection
Also, Fuel Pressure Regulator

ENGINE RUNS TOO LEAN
^ Coolant Temperature Sensor
^ Air Mass Meter Connections
^ Injection Ground Connections
Computers and Control Systems

^ Intake Air Leak