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Help Identify Noise, 1.0 Ecoboost.

Rob89
Rob89
in Ford Focus Club

Featured Replies

Hello
I had my wet belt changed last October and at the same time I have the aux belt renewed too and now recently there has been a "chirping" noise coming from around the aux belt. The belt does not appear to be contaminated by any kind of liquid from what I can see so I am leaning towards a pulley. 

Conditions for the chirping sound to occur that I have found are:

  • Acceleration at low revs during dry weather. At around 2000rpm the sound disappears and also eventually completely disappears even at low revs after driving for a period of time.
  • Acceleration at low revs during damp, wet weather which then can be heard chirping during idling when parked up or at lights.

I have videos I recorded the other day whilst the weather was damp/wet and I was parked up at home after driving from work.
https://youtube.com/shorts/BEU0UG0AgLE?si=EsGuQpxrmxyajJZ6
https://youtube.com/shorts/Oa-A0p6JLTM?si=GxQMWk4T_p2zU9ik

Any help and thoughts would be appreciated and will try to answer any questions if more info is needed.

 

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    Might be a bolt or a clamp.

     

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    It's the aux belt tensioner.

  • Quote
    1 hour ago, unofix said:

    It's the aux belt tensioner.

    Usual noise for that model?

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    31 minutes ago, Bol said:

    Usual noise for that model?

    I would say it probably needs a new aux belt tensioner

  • Quote
    • Author

    It has never done this sound in the 10yrs I've owned it so it must be something mechanical.

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    • Author

    I think I will go ahead and change the tensioner and idler to see if that stops the sound. If not, it may be a bigger job.

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    • Like 1
    • 3 months later...

    Did this turn out to be the tensioner in the end? I have this exact noise on my 1.0 focus and it's driving me insane trying to chase it! 🤞

  • Quote
    • Author
    19 hours ago, Joshmcgarrigle said:

    Did this turn out to be the tensioner in the end? I have this exact noise on my 1.0 focus and it's driving me insane trying to chase it! 🤞

    I should have updated this.
     

    I did fix the noise by changing the tensioner, guide and belt as part of a kit. As to which was causing the issue, I am not sure. Good news is the noise hasn't come back since and that was 3 months ago.

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    • Like 2
    10 hours ago, Rob89 said:

    I did fix the noise by changing the tensioner, ......

    That was a lucky guess 🤣

  • Quote
    • Like 1

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