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  1. #1
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    Yes | No

    bypassing throttle body gasket

    I have a coolant leak at the throttle body. I searched the forum and several have said to simply bypass the throttle body by connecting the coolant hoses to each other with a small piece of pipe. Seems reasonable as others have said trying to replace the gasket often results in broken screws which can be a problem.

    Questions:
    1. What size pipe fits the hoses?
    2. Do you need to plug the holes that the coolant hoses previously went to?
    3. Any long term problems doing this?

  2. #2
    TJ
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    Yes | No

    Re: bypassing throttle body gasket

    1) Either 5/16" or 3/8" I forget
    2) not really
    3) during cold weather ice can build up in the throttle body (it actually happened to me once, I had to turn the ignition off and pull over because the throttle wouldn't close all the way)

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    The 325e or 535i don't even have this by-pass

    So it's fine to go around it. I did so with my ex 90 325i years ago, never had a problem....

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