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Home >> Audi >> 2012 >> Q5 3.2 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> 3.2L - Fuel Injection System - Engine Code(S): CALB >> 24 Fuel Injection System >> Removal And Installation >> Upper Intake Manifold >> Removing

Upper Intake Manifold: Removing

NOTE:

During installation, all cable ties must be re-installed at the same location.

-- Remove front and rear engine covers.

-- Free up hose connection -1- to the Evaporative Emission (EVAP) canister.

Fig 1: Identifying Air Guide Hose Components
GWWA10-10839Courtesy of AUDI OF AMERICA, LLC

-- Remove vacuum hose -2- from the air guide hose connection.

-- Remove air guide hose by loosening the hose clamp -3- and opening the clips -arrows-.

NOTE:

Ignore -4-.

-- Disconnect vacuum hose -2-.

Fig 2: Identifying Components Location - Rear Intake Manifold
GWWA10-10834Courtesy of AUDI OF AMERICA, LLC
NOTE:

Disregard -arrow-.

Fig 3: Identifying Component And Connector Locations - Rear Intake Manifold
GWWA24-10745Courtesy of AUDI OF AMERICA, LLC

1 - Evapoative Emission (EVAP) canister purge regulator valve 1 -N80-

2 - Secondary air injection (AIR) solenoid valve -N112- (installed only on vehicles with emissions standard ULEV 2)

3 - Intake Air Temperature (IAT) sensor -G42- /Manifold Absolute Pressure (MAP) sensor -G71-

4 - Auxiliary heater exhaust gas sensor -N422- (installed only on vehicles without an auxiliary heater)

5 - Secondary air injection (AIR) solenoid valve 2 -N320- (installed only on vehicles with emissions standard ULEV 2)

6 - Throttle valve control module -J338-

-- Remove EVAP canister purge regulator valve 1 -N80- from the bracket and lay it aside with the hose connected.

-- Disconnect front connectors on the intake manifold.

Fig 4: Checking Intake Manifold Tuning (IMT) Valve -N156- Terminals
GWWA24-10405Courtesy of AUDI OF AMERICA, LLC
  1. Intake Manifold Tuning (IMT) valve -N156-
  2. IMT valve position sensor -G513-

-- Remove vacuum hose -arrow-.

-- Disconnect vacuum hose -arrow- at leak detection pump.

Fig 5: Disconnecting Leak Detection Pump Vacuum Hose
GWWA15-10107Courtesy of AUDI OF AMERICA, LLC

-- Free up vacuum hose -arrow-.

Fig 6: Disconnecting Electrical Harness Connectors
GWWA24-10406Courtesy of AUDI OF AMERICA, LLC

-- Free up wiring harness.

-- Remove bolt -3-.

-- Press retaining tab -2- up slightly and disconnect the crankcase ventilation hose from the intake manifold.

-- Remove bolts -arrows- and upper section of the intake manifold.

Fig 7: Identifying Bolts And Intake Manifold
GWWA15-10000Courtesy of AUDI OF AMERICA, LLC
NOTE:

Plug the intake ports of the cylinder head with clean rags.