13 54 030 Removing And Installing/Sealing Throttle Assembly (S54)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see FUEL SYSTEM - SPECIAL TOOLS - 3-SERIES (M54/E46) .

Special Tools Required:

12 1 120

NOTE: Interrogate fault memory of DME control unit. Turn off ignition.

Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (S54) .

Press lock together and detach air hose (1) from air pipe (2).

Fig 1: View Of Air Hose And Air Pipe

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Release nuts, remove idle-speed control valve (1) together with holder from assembly and place to one side.

Fig 2: Locating Idle-Speed Control Valve

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Detach wiring harness (1) for fuel injector rail from holder (2).

Detach hose (5) from air pipe (4).

Detach protective cap (3) from holder (2) towards top.

NOTE: J For a better overview, this work step is shown on an engine that 1 has been removed.

Fig 3: Removing Wiring Harness For Fuel Injector Rail From Holder

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Release nut and remove cable (1) from holder.

Fig 4: View Of Cable And Holder

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Unlock plug (1) and detach from throttle potentiometer (2).

Fig 5: Locating Plug And Throttle Potentiometer

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CAUTION: Connector strip (1) can break if it is removed without special tool 12 1 120.

Fig 6: Identifying Connector Strip And Special Tool

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Unlock connector strip with special tool 12 1 120 in sequence 1 to 6.

Fig 7: Identifying Connector Strip Removal Sequence

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Recycling:

Fuel escapes when fuel lines are detached. Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Detach retainer (1).

Recycling:

Catch and dispose of escaping fuel.

Fig 8: Removing Retainer

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Release screw connection of fuel injector rail and air pipe on left and right.

Pull out fuel injector rail towards top.

Recycling:

Catch and dispose of escaping fuel.

Fig 9: Releasing Screw Connection Of Fuel Injector Rail And Air Pipe

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Installation:

Check O-rings, replace if necessary.

When fitting, coat all O-rings with lubricant SAE 90.

Fig 10: Locating O-Rings

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Remove pulse generator for inlet camshaft. Refer to 12 14 523 REPLACING PULSE GENERATOR ON INLET CAMSHAFT (S54) .

Unclip pull rod (1) for throttle actuator on throttle side.

Fig 11: View Of Pull Rod For Throttle Actuator

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Release screw connection of throttle assemblies.

Remove throttle assemblies.

Fig 12: Locating Screw Connections Of Throttle Assemblies

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Installation:

Clean sealing surfaces (1). Note correct position of adapter sleeves (2).

NOTE: For a better overview, only a removed throttle assembly is shown.

Fig 13: Identifying Adapter Sleeves Positions

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Installation:

Clean sealing surfaces on cylinder head.

Replace all O-rings (1) in cylinder head.

Fig 14: Installing O-Rings In Cylinder Head

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CAUTION: After working on throttle system (throttle assembly, servomotor, potentiometer), carry out electronic throttle test with DIS Tester or MoDiC without fail:

Service functions.
DME system checks.
Function test.

Installation:

Read out fault memory of control unit of Digital Motor Electronics (DME).

Check stored fault messages.

Rectify faults.

Now clear the fault memory.