Secondary air combination valve, removing and installing: Removing
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Remove engine cover - arrows -.
- Disconnect connector - arrow - at Engine Coolant Temperature (ECT) sensor G2/G62.
- Move wiring harness at bulkhead clear.
- Disconnect vacuum hose - arrow - at combination valve.
- Remove 4 bolts from combination valve and remove combination valve.