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Thread: V 10 (M85) throttle actuator replacement

  1. #1
    Join Date
    Dec 2006
    Location
    Las Cruces, NM
    Posts
    330
    My Cars
    BMW M6 M63 V10 6 sp

    V 10 (M85) throttle actuator replacement

    Hi; Tried SEARCH, came out empty: My car needs the throttle actuators replaced. I already bought the pair (aftermarket gears, electronics with lifetime warranty). My question: how difficult is it for a weekend mechanic? There's a video on YouTube that explains it very well, but... it doesn't give too much info on difficulty factor. Maybe the person doing it is a professional. Is this something a regular Joe can tackle? there's not really that much engine disassembly. Please advice.

  2. #2
    Join Date
    Jun 2002
    Location
    Aberdeen, NC (yes, again)
    Posts
    23,673
    My Cars
    E39M5, E500 4WD
    The book says 6.5 hours for both. This will be for a pro with all the tools.

    It's important to note that when you're done, you need to use ISTA to perform a test sequence on the new throttle motors, which I believe is what resets the adaptations.

    Here are the actual factory directions, minus the pictures (sorry):


    13 62 540 - Removing and installing/replacing throttle valve servomotor (S85)


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    Necessary preliminary tasks:
    - Read out fault memory of DME control unit; if necessary, work through test schedules
    - Switch off ignition
    - Remove intake air manifold See: Intake Manifold > Removal and Replacement
    - Release positive lead on cable duct at front and rear
    - Remove cover for ion control unit on left and right
    - Remove cover for ignition coils on left and right


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    Release bolt on cable duct (1).


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    Release nut on cable duct (1).
    Tightening torque 12 52 3AZ .
    Unlock plug in V-chamber and disconnect, lay cable duct (1) to one side.


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    Note:
    Illustration shows and description refers to the left throttle valve servomotor. The procedure is identical for the right filter housing.

    Remove pull rod (1).

    Unfasten screws.
    Remove throttle valve servomotor (2).


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    Important!
    After performing work on the throttle valve system (throttle valve assembly, servomotor, Hall sensor), it is absolutely essential to carry out a throttle valve actuator system test with the BMW diagnosis system!
    Function selection:
    - Complete vehicle
    - Drive
    - Engine electronics
    - Air supply
    - Throttle valves
    - Throttle valve actuator


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    Note:
    Check stored fault messages.
    Now clear the fault memory.

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

  3. #3
    Join Date
    Jan 2007
    Location
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    It's not a really difficult job, but there is a lot of room for error. It takes experience to remove all the hoses and vent lines without breaking anything. Also make sure all the rubber connections are properly seated on the throttle bodies.
    ASE and BMW Master Certified Technician

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