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Ford focus mk4 1.0 click/pop noise coming from air filter

BeccaN9
BeccaN9
in Ford Focus Club

Featured Replies

I have a ford focus 1.0 mk4 and have noticed when i rev the car and its returning back to idle at about 1000rpm its making a weirdish click/pop sound coming from the air filter.ive followed the pipe from air filter at back of engine no signs of air leak there.sounds like its from the turbo..no engine lights on,no loss of power and no smoke out of exhaust anyone know potentially whats wrong

  • Quote


    47 minutes ago, BeccaN9 said:

    its making a weirdish click/pop sound coming from the air filter

    There are reports of those who have the Kellogg's air filter hearing 'Snap crackle and pop' sounds 🤣 🎉

     

    Sensible answers will be along soon 😉

  • Quote
    • Like 1
    14 hours ago, unofix said:

    There are reports of those who have the Kellogg's air filter hearing 'Snap crackle and pop' sounds 🤣 🎉

     

    Sensible answers will be along soon 😉

    i nearly believed you then 😄 

  • Quote

    Proberly nothing to worry about.  If you no warning lights or loss of power keep driving

  • Quote
    • Like 1
    • 2 weeks later...

    Same issue. 1.0l 125hp ecoboost. 

  • Quote
    4 minutes ago, Tumis said:

    Same issue. 1.0l 125hp ecoboost. 

    MAP sensor maybe?

     

  • Quote

    Could be. Watched a video on youtube to check MAF(mas air flow) MAP(manifold abosulte pressure) and IAT(intake air temperature) . What normal range of pressure should be on MAP? My results below.

    image.thumb.jpeg.beb19b9c13af4d0f93ea517f5b88a39a.jpeg

  • Quote
    • 4 weeks later...
    • Author

    My noise stopped when i unplugged the map sensor…replaced it and it still makes it unless i keep unplugging it🙈

  • Quote

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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