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Strange hoover noise

NightRider36
NightRider36
in Ford S-Max Club

Featured Replies

Hi guys as per title i got a strange hoover noise its not a whistle it more sounds like a hoover when driving it dont get louder or quieter its just there and when i turn engine off its same noise as when you turn off a hoover. I hope this makes sense to you any ideas please its my first  S max.  NO THERE ISNT A HOOVER UNDER THE BONNET haha.

Thanks guys

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    There was a system I think called secondary air where extra air was pumped into the exhaust with ‘egi’  (exhaust gas ignition) to light off the catalyst quicker . This used to run for about 90 seconds from startup then stop.

    it was on petrol models but don’t know if yours would have it. It was a long time ago.

  • Quote
    • Author

    It keeps going mate while driving it dont go louder or quieter mine is a 2.0  TDCI    on a 2007 plate 

  • Quote

    Not that then. hope someone else can help

    Could it be the radiator cooling fans?

  • Quote

    Radiator fan sounds like a good bet...have you got the air conditioning on?  

  • Quote

    get it warm and lift the bonnet, stick your head in

  • Quote
    • Author
    2 hours ago, TomsFocus said:

    Radiator fan sounds like a good bet...have you got the air conditioning on?  

    No mate i checked this and its off.

    Will have a good look in the daytime.

  • Quote

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