S6 V8-4.2L (BBD) (2004)
Intake Manifold: Service and Repair
Intake Manifold, Removing And Installing
NOTE: The procedure is described for vehicles with manual transmission. On vehicles with automatic transmission remove also the secondary air
injection pump.
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Remove air distributor.
1
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Detach Wastegate Bypass Regulator Valve -N75 from fuel rail.
2
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Disconnect harness connector from EVAP Canister Purge Regulator Valve - N80.
3
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Loosen both exhaust temperature sensors -G235 and -G236 from intake manifold. The sensors remain connected. Ensure Ground
cable is tight when installing.
4
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Loosen hose to brake booster at bulkhead.
5
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Disconnect harness connector from Recirculating valve for turbocharger - N249.
6
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Loosen indicated hose. The hose leads to a vacuum reservoir.
7
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Disconnect harness connectors of fuel injectors from cylinder bank 1 and bank 2.
8
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Loosen indicated hose. This hose leads to the suction side of turbocharger bank 2.
9
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Disconnect harness connector at Throttle Valve Control Module -J338.
10
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Disconnect harness connector at Charge Air Pressure Sensor -G31.
11
-
Remove indicated pressure hoses
12
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Loosen indicated hose, this hose leads to bypass valve.
13
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Disconnect harness connector at Intake Air Temperature (IAT) Sensor -G42.
14
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Loosen indicated hose, (crankcase ventilation hose).
15
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Loosen indicated hose. This hose leads to the suction side of turbocharger bank 1.