Audi Workshop Service and Repair Manuals

Special tools, workshop equipment, and other items required

• ◆ Hose clamps 3094
• ◆ Adhesive sealant

=> Parts List

Removing

• ‒ → Remove the front engine cover -arrows-.

• ‒ → Disconnect the air duct hose -1- from the air mass meter.
• ‒ Unplug connector -2- at air mass meter.
• ‒ Unscrew bolts -3- and -4-.
• ‒ Remove air cleaner housing.

• ‒ → Disconnect hoses -1- and -3-.
• ‒ Remove the air duct, release spring clamp -2- for this purpose.

• ‒ → Detach the throttle cable -arrows-.
• ‒ Disconnect hose -1- to ACF.
• ‒ Unplug connectors:

•     2 -    Intake air temperature sender -G42
•     3 -    Throttle valve control part -J338

• ‒ Lay wiring aside.

• ‒ → Clamp off coolant hoses with hose clamps 3094.
• ‒ Disconnect the coolant hoses at the throttle valve connection.

• ‒ → Detach the vacuum hose -arrow- to the brake servo at the intake manifold.
• ‒ Turn the breather housing clockwise and detach from the cylinder head.
• ‒ Close off the openings in the cylinder head cover with a clean cloth.

• ‒ → Unplug connector -1- at intake manifold changeover valve -N156.
• ‒ Disconnect vacuum hose -2-.

• ‒ Detach earth strap at bracket for upper section of intake manifold.
• ‒ → Remove the two bolts arrow on the rear intake manifold mounting (one on the left, one on the right) -arrow-.

• ‒ → Remove bolts -1- and -2-.
• ‒ Where fitted, lever off the clips -1- and -4-.
• ‒ Pull the retaining lugs slightly to the side to release -arrows-.
• ‒ Press off the upper section of the intake manifold from the lower section rearwards.

Note:

Plug the intake ports of the intake manifold (lower section) with clean cloths.

Installing

Installation is carried out in the reverse order; note the following:

Note:

Replace seals and gaskets.

• ‒ Bond the sealing rings onto the lower section of the intake manifold, between the upper and lower sections of the manifold, with adhesive sealant.
• ‒ Adhesive sealant

=> Parts List

• ‒ Push the upper section onto the bottom section of the intake manifold and bolt into place.
• ‒ Allow the retaining lugs on the left and right to engage and secure each with a clip.
• ‒ Coat the collar of the bolts for the rear intake manifold mounting with silicone-free lubricant and tighten.
• ‒ Lubricant

=> Parts List

• ‒ Adjust throttle cable:

=> Fuel Supply System - Petrol Engines; Repair group 20; Servicing throttle mechanism - Vehicles with mechanical throttle mechanism

• ‒ Top up coolant .

Tightening torques