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Thread: 3.0 TDI idle speed?

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    Mr-C's Avatar
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    3.0 TDI idle speed?

    Mine is at about 800 rpm, to me it does sound a bit on the fast side. Whats yours? or what should it be?

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    Is that from cold?

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    Seems about right to me...(same as mine).
    Mr-C likes this.

    Audi A4 B7 3.0TDI S-Line Sprint Blue
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    Quote Originally Posted by Steve220 View Post
    Is that from cold?
    Same hot or cold

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    Should drop slightly when the engine has warmed up, maybe 50rpm or so? Mine sits at about 850-900rpm when cold and 775-825rpm when warmed up.

    Sounds about right though. I think you can adjust the idle speed on VCDS... but I'm not 100% on that

    Car: 2007 A4 3.0TDI Quattro S-Line Cabriolet
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    Cheers guys, mine must be right then

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    gupsterg's Avatar
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    Mine on a 3.0 TDi A6 (same engine) can be 1000 rpm when really cold/first start of the day, then gradually drops as car warms...

    When warm/not cold outside temps will be around 800rpm...

    Quote Originally Posted by jjmurphy21187 View Post
    I think you can adjust the idle speed on VCDS... but I'm not 100% on that
    Anyone got info on this please?

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    Why would you want to adjust the idle speed anyway (out of curiosity)?

    Audi A4 B7 3.0TDI S-Line Sprint Blue
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    I have an issue which has got right on my wick! it is an idle hunt/flutter its not just the needle it is the engine... it happens just after crank finish of engine, initially for a moment the engine is smooth then it go nuts!

    It has been suggested to me an idle increase at startup may help..

    I've DIY done:-

    Full set of injectors, MAF, Throttle body, Battery, full service...
    EGR inlet into charge air decoked, EGR valve/cooling flap been vacuum tested/MVB 03 done(visual/decoke soon to be done)...

    I've had done:-

    Full set of chains & tensioners, Tiptronic oil change, Last rev of engine ECU software done...

    Soon to be done is Ins.cluster flash to last rev of SW as TPI/TSB suggest bad comms between engine & ins.cluster with SW I currently have (should also give me digi.speedo in DIS ) ...

    Sorry OP for hi-jack ... I have no fault codes to go by ... fuel pressure/rail/pump MVB look good as well...

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    inlet manifold maybe on a 3.0 ?

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    Could be manifold flaps or air in the fuel line if its a derv.

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    Fuel lines air free... the clear section of fuel line to the HPFP pump is always full and bubble free...
    Lower/upper intake manifolds will soon be decoked but no faults checked visually and VCDS test of MVB/actuations...

    I will leave posting in this thread now unless someone give info on idle adjustment...

    Going to MRC tuning soon to see if they can diagnose anything...

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    Quote Originally Posted by Mr-C View Post
    Mine is at about 800 rpm, to me it does sound a bit on the fast side. Whats yours? or what should it be?
    Mine is the same, about 800 RPM, I always thought it seemed a little high but it is the average

 

 

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