Right combination valve for secondary air injection, removing and installing

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Fig 1: Removing Rear Engine Cover

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove rear engine cover (arrows).

Fig 2: Removing Cover In Engine Compartment (Right Side)

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove cover -1- in engine compartment (right side).

Fig 3: Identifying Holding Plate, Intake Air Hose, Hose & Air Duct

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts for holding plate -3- for solenoid valves (arrows).
Disconnect intake air hose -1- at Mass Air Flow (MAF) sensor.
Disconnect hose -4- for crankcase ventilation from air guide -2-.

Fig 4: Removing Bolt And Disconnect Air Duct At Throttle Valve Control Module

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolt (arrow) and disconnect air guide -2- at throttle valve control module.
Disconnect hose -1- from air guide.

NOTE: The illustration shows the air guide from the rear with the engine removed.

Fig 5: Unscrewing Bolts And Removing Combination Valve

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Unscrew bolts -1- and -2- and remove combination valve.
Disconnect vacuum hose (arrow).

Installing

Installation is reverse of removal, noting the following:

NOTE: Replace gaskets and O-rings.

Tightening torques

Component	Nm
Combination valve to cylinder head	10
Connecting tube to combination valve	10