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Thread: Intermittent noise coming from engine bay. HELP!

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  1. Intermittent noise coming from engine bay. HELP! 
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    Hi guys! I've been having a weird noise coming from my 2007 A3 1.6 FSI which only happens once in awhile. I took it to a garage but they weren't able to get the car to make the noise and since I don't know why it happens I couldn't replicate it...
    I'm even having a hard time describing the noise. I've found a video on youtube of someone with the same issue, hopefully someone on here might have an idea of what it might be?
    Here's the video: Audi A3 Noise - YouTube
    It's a sort of cycling noise and it happens when the car is stopped in neutral as well.

    If someone could shed some light on this I would super grateful! Hopefully I can tackle this before it becomes a more serious problem. If anyone has any questions please ask and I'll do my best to answer them.
    Last edited by NomadRider; 27-08-2019 at 01:43 PM.
     
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  2. Re: Intermittent noise coming from engine bay. HELP! 
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    Difficult to make out, when it happens, does it stop if you push the clutch pedal down?
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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  3. Re: Intermittent noise coming from engine bay. HELP! 
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    Hey Crasher, thanks for the reply! Nope, it gets louder the higher the revs from what I could tell. After awhile of it being on idle it starts dying down again... It was pretty noticeable when driving in first and second gear.
     
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  4. Re: Intermittent noise coming from engine bay. HELP! 
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    Difficult to say without sticking my head in the engine bay WHEN it is making the noise.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  5. Re: Intermittent noise coming from engine bay. HELP! 
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    Yup, same problem the mechanic had. I've bought a stethoscope to be able to pinpoint the location of the noise next time it happens. It's definitely coming from the front left side of the engine bay (when looking into it), which is where the alternator and alternator belt are, but I need to know more specifically where...

    I was hoping someone on here would go "Oh yeah, my car did that noise before and it was this thing", but no luck so far though.
     
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  6. Re: Intermittent noise coming from engine bay. HELP! 
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    Quote Originally Posted by NomadRider View Post
    It's definitely coming from the front left side of the engine bay (when looking into it)
    The cars right then, handing is always sitting in the car looking forwards. Water pump, alternator or tensioner if you are lucky, cam chain issue if you aren’t.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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