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uneven idle

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by hubbo1, Jun 1, 2012.

  1. hubbo1
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    hubbo1 Member

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    [Jun 1, 2012]
    hi i have an a4 tdi s line auto 2005,it has a very slight uneven idle,i have cleaned the egr valve and air intake,just wondered if there is anything else i can try?
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  3. gary3306
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    gary3306 Member VCDS Map User

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    [Jun 1, 2012]
    When you say uneven idle, do you mean the engine doesn't tick over smoothly or there is a bit of a vibration that sort of comes and goes?

    Reason I ask is if its the latter, you may be in the early stages of DMF failure. If its vibrating slightly at idle, try dipping the clutch as its in mid vibration, and see if it improves slightly. If it is the DMF I hope you have a large wallet or an understanding bank manager.
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  4. hubbo1
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    hubbo1 Member

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    [Jun 1, 2012]
    thanks-but as its an auto id be suprised if it had a dmf! lol
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  5. gary3306
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    gary3306 Member VCDS Map User

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    [Jun 1, 2012]
    Hmm, i must learn to read posts properly. Yes, you're right, ignore my post.
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  6. sidibear
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    sidibear Looking for Zombies !! Staff Member Moderator

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    [Jun 1, 2012]
    Mine has.
    Try changing the fuel filter and have a good look for air leaks in the inlet hoses.
    One tip is to spray the hoses one at at a time with wd40 while the engine is running, if the idle goes up you have a leak on that hose.
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