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Thread: Hissing from throttlebody

  1. #1
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    VT S2 Calais 5.7 A4

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    Default Hissing from throttlebody

    Hissing I beleive it is coming from the little hole inside throttle body at the top. 84mm Starr. Is it the idle sensor switch and if so can you adjust this to stop the hissing? Seems to go away on open throttle but is very noisy at idle. Just changed to OTRCAI with panel filter so. did not notice it with normal two hole mod and filter. Mafless tuned. cheers Brian

  2. #2
    acarmody is offline Donati..Whoa Green
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    VX Berlina

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    Apr 2007
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    I don't know what the V8 TBs look like but the V6 ones have O-rings on the sensor, try a new one of them.
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