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Thread: Help with cold start issue

  1. #1
    wuta3's Avatar
    5th Gear

    Join Date
    Jul 2012

    Help with cold start issue

    Firstly, since filter change/new intake my MPG is better. Now getting 30mpg if gentle.

    However, I have an odd cold-start issue. In the mornin, here's what happens:

    a) Turn engine over
    b) Rev dial takes about 1-second longer than normal to move ... it's on 0rpm even though the engine is running during that second
    c) The idle is a bit rough for half a second then settles to rev a bit high
    d) Needle wakes up, shows correct (but too high) 1100-1200 RPM
    e) Revs settle to 1000rpm before settling to 800rpm as normal.

    Warm starts are fine.

    Car drives fine otherwise. PCV is new-ish, been there and changed that. Fuel related? Seems odd that the dash needle is a bit laggy too but could be unrelated.
    ​​Programmer/Web Developer, Headphone/Amp Geek
    06 SLine Special Edition Phantom Black 2.0T FSI Quattro A3
    Done: P-Flo, RevD, Sachs Organic, Milltek TBE + Res + Sports cat
    Wanted/Next:Intercooler, HPFP, Remap

  2. # ADS
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  3. #2
    1st Gear

    Join Date
    Oct 2012
    Look at the battery. Mine was doing some odd things that seemed similar to a previous cold start problem related to the lift pump. Putting in a new battery cured it.

    These cars seem to be very sensitive to weak batteries it seems.
    wuta3 likes this.



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