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revs dropping when coming to a stop !!

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by boomtown, Feb 26, 2013.

  1. boomtown
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    boomtown Member

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    [Feb 26, 2013]
    as above my revs have started dropping when coming to a stop at lights , junctions etc, they then shoot back to normal with a bit of a jolt
    Any ideas ??
    Audi a4 3.0 quattro tip
    Cheers
    #1
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  3. boomtown
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    boomtown Member

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    [Feb 26, 2013]
    Anyone ??
    #2
  4. Mike.M
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    Mike.M Well-Known Member

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    [Feb 27, 2013]
    Sticky throttle body I would say.

    When the butterfly shuts it must be sticking and not allowing for a minor adjustment at idle.

    Take it off and give it a clean, but be gentle.
    #3
  5. boomtown
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    boomtown Member

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    [Feb 27, 2013]
    Looks like abit of a pig on my car, any help appreciated on removal
    #4
  6. boomtown
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    boomtown Member

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    [Feb 28, 2013]
    Well, cleaning throttle body made no difference !
    #5
  7. boomtown
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    boomtown Member

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    [Mar 1, 2013]
    Could this be a dodgy o2 sensor ??
    #6
  8. quattrojames
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    quattrojames Moderator Staff Member Moderator

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    [Mar 1, 2013]
    If it was a manual car I'd suggest the clutch switch, I guess the auto must have something similar?
    #7

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