Exhaust Gas RECIRCULATION: Notes
WARNING: This page is about a different car, the 1997 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.
There are 3 types of EGR systems used: pulse width modulated backpressure (positive and negative) EGR with a control solenoid, pulse width modulated backpressure (positive and negative) EGR without a control solenoid, digital and linear EGR. See EGR SYSTEM IDENTIFICATION table.
EGR SYSTEM IDENTIFICATION
| Application | System Type | Solenoid Type |
|---|---|---|
| 3.8L | Linear | N/A |