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Home >> Buick >> 1994 >> Century Base, 2.2 4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 2.2L >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (C-7) >> Notes

Exhaust Gas RECIRCULATION (C-7): Notes

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, and digital EGR. See EGR SYSTEM IDENTIFICATION  table.

EGR SYSTEM IDENTIFICATION

Application System Type Solenoid Type
2.2L BP/EGR Normally Closed