Engine Controls - 3.8L (L36 and L67) for Buick Century 2004

All Description and Operation

• Air Intake System Description
• Evaporative Emission Control System Description
• Knock Sensor (KS) System Description
• Powertrain Control Module Description

Diagnostic Procedures

• Poor Fuel Fill Quality
• Rough, Unstable, or Incorrect Idle and Stalling
• Service Bay Test

Electrical/Electronic Schematic Diagrams

• Engine Controls Schematic Icons

Electrical/Electronic Specifications

• Altitude Versus Barometric Pressure
• Diagnostic Trouble Code (DTC) Type Definitions
• Temperature Versus Resistance

Gas, Vacuum and Fluids Schematics and Diagrams

• Evaporative Emissions Hose Routing Diagram