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Thread: rattling sound in the rain

  1. #1
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    Question rattling sound in the rain

    When it is raining and I start the engine and put it in Drive or Neutral, there is a loud rattling noise behind the engine near the exhaust manifold. As the engine warms up the noise goes away within 5 minutes.


    Sounds like it is either from the engine, or the exhaust line, unsure of which as I am in the car when it happens.

    My dad and I don't believe it is a belt, but are unsure of this issue.

    Any suggestions or ideas?

    TIA



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    Probably a loose heat shield. There have been a few members on this forum that have mentioned bolts from various heat shields being loose and causing it to rattle. As for it going away as it warms up, not sure. Maybe as the item heats up it expands the bolts making it tight enough not to rattle?

    Hoist or ramp the car when its been off for a while and start grabbing the shields to see whats loose.

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    Ok I will take a look. Do you know the general location of the heat shields?

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    Check this thread to see locations of the shields:

    Thread: Micra Underside Photos

    The shields are bolted to the underbody, above the exhaust system. They look a bit like tin foil or aluminum pie plate (and they're not a lot thicker than that).


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