Left combination valve for Secondary Air Injection, removing and installing
WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, and 2007 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
Removing
NOTE:
- During installation, all cable ties must be re-installed at the same location.
- Pull rear engine cover - arrows - off.
- Drain coolant → Cooling system, draining and filling .
- Remove left coolant pipe → Left coolant pipe, removing and installing .
- Remove Heated Oxygen Sensor (HO2S) 2 G108 (in front of catalytic converter) → 24 - MULTIPORT FUEL INJECTION (MFI) .
- Remove air guide hose - 3 - on secondary air injection (AIR) combi-valve by pressing release buttons.
- Remove bolts - 1 and 2 -.
- Free up electrical wiring on secondary air injection (AIR) combi-valve.
- Remove Secondary Air Injection (AIR) combi-valve.
NOTE:
- The engine is shown from behind to provide a better illustration.
Installing
- Tightening torque → Secondary air injection (AIR) system, assembly overview .
Installation is in reverse order of removal, note the following:
NOTE:
- Replace gaskets and O-rings.
- Secure all hose connections using hose clamps appropriate for the model type .
- During installation, all cable ties must be re-installed at the same location.
- Install Heated Oxygen Sensor (HO2S) 2 G108 (in front of catalytic converter) → 24 - MULTIPORT FUEL INJECTION (MFI) .
- Install left coolant pipe → Left coolant pipe, removing and installing .
- Fill with coolant → Filling .