Field Remedy: 1721
Subject: Engine Z22SE-EGR Valve - Defective EGR Valve to be omit
Models: Engines: Option:
Vectra-C 2002...2004,Astra-G 2000...2004,Zafira 2001...2004,Astra-G Coupe 2000...2004,Astra-G Cabrio 2001...2004 Z22SE,Z22SE,Z22SE,Z22SE,Z22SE
Complaint: Defective EGR valves should be removed on the Z22SE engine. The EGR pipe remains in the engine.
Cause: The Euro 4 emission standard will be met even without EGR-valve. This is because of a modified Z22SE ECU calibration.
Production: On Speedster the EGR valve will remain until end of production. On the Vectra-C, Astra-G and Zafira the EGR-valve will be omit during MY 2004 (running change). The following modifications will be introduced: 1. Engine wiring harness adapted 2. Cover plate for the exhaust gas recirculation duct 3. Omission of exhaust gas recirculation pipe 4. Intake manifold without connection for exhaust gas recirculation pipe 5. New engine control unit calibration 6. Modified bracket for upper engine cover
Remedy:
In case of customer complaint where an EGR valve is detected as faulty
during diagnosis, it should not be renewed but removed.