noise in the cabin

Discussion in '3 Series' started by Michael Taylor, Aug 10, 2019.

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  1. Michael Taylor
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    Michael Taylor

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    My 320d has developed a chain like sound at low rpm which i can hear in the cabin.
    Tried to upload an audio file but it says The uploaded file does not have an allowed extension.
    Has anyone got any ideas as to what it is thanks.
     
  2. Peter
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    Peter WARLORD Site Supporter

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    Doesn't bode well I'm afraid. :( 320d... I'm assuming you may have the N47 engine which is known for timing chain/guide failures. Did the noise come on slowly, or very quickly?

    Be very cautious how you use the engine until you have the issue identified. Chains can break and wreck the engine. Age (and mileage) will help confirm if you are in the build/risk period where there are issues.

    Peter
     
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  3. quinnj3
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    quinnj3

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    I’m not an expert on this but I recall my old E46 318ci petrol having a timing chain noise. The tensioner was weak, replacing that solved the problem. Was simple and cheap to fix. I’m not sure if this can be done on the diesel variant though. Sorry if this doesn’t help. The advice above is probably best to adhere to until you know for certain.


    Sent from my iPhone using Tapatalk
     
  4. K777
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    K777 WARLORD Site Supporter

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    Do not drive it - only to the nearest garage.

    We had a 318d in our fleet with a similar noise, the driver needed to do a job and drove maybe 600 miles and the damage was done, new (refurbed ) engine needed.

    Get it checked asap, its most likely a goosed timing chain.
     

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