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Thread: Vitz 2004: Strange whisteling sound on lower speed/gear

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    PakWheeler Follow
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    Default Vitz 2004: Strange whisteling sound on lower speed/gear

    Hi,

    My Vitz 2004 (only petrol) when accelerated from stop position, it produces a strange whistling sound which increases a bit further when the gear changes for the first time and then sound remains a bit high until speed of 40 and then the sound almost goes as speed increases further. At higher speeds you can't really observe this sound. The sound only comes when you press accelerator and if you lift your foot from accelerator while driving then even on lower speed the sound immediately goes. There is no such sound when car is in N or P gear. I feel this sound almost at front of driver side in engine area. I want to ask:

    1- What could cause this sound (it has been driven ~10K after transmission oil changed with ZIC ATF, the engine oil and air filters are just changed last week)
    2- Is it related to engine? transmission or exhaust system?

    I would like to add that I started to hear this sound after I replaced the brake servo as the older was causing the sudden hard braking. Is the new brake servo may have any connection with the sound?

    Thanks in advance for your advice.
    * The difference between genius and stupidity is that genius has its limits *

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    Senior PakWheeler Follow
    chinyoti's Avatar
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    Default

    Google it there are answers for this model on Yaris forums and a vdo on youtube aswell, just yesterday i googled for 2007-2008 Vitzes Whistling sound, but i found links to 99-04 Models, InshaAllah youll find something.

    I havnt faced such an issue in my 2002 so im not aware of it
    Get over the fact that Xli lacks power windows, Its an Xli because it lacks thoose features or else it would be a Gli or an Altis if had all the goodies.

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