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1985
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Nova Base, Automatic
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EGR System - Gasoline
EGR System - Gasoline
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Description
Operation
Vacuum Modulated (Ported Vacuum) EGR System
Exhaust BACKPRESSURE Modulated EGR System
Notes
Positive Backpressure EGR Valve
Negative Backpressure EGR Valve
Pulse Width Modulated EGR System
Maintenance
EGR Valve Cleaning
Notes
One-Piece Valve
EGR Solenoid Filter Replacement
3.0L & 3.8L V6 Only
Component Testing
Positive BACKPRESSURE EGR Valve
Vacuum Modulated & Negative BACKPRESSURE EGR Valve
Pulse Width Modulated EGR Valve
EGR Control Circuit
Wiring Diagrams