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Unusual idle fluctuation

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  • #1

    Unusual idle fluctuation

    Have noticed lately that my MY11 Superb 118TSI is starting to get a bit unsettled at idle. Rather than maintaining a steady RPM, the engine seems to fluctuate a little between 800-1000 RPM. This happens both when the engine is cold or at temp, but does not occur consistently. Sometimes it happens and sometimes not.

    Car is at approx 75000 kms, and was last serviced 5000 kms ago. idle fluctuations happened both before and after the service.

    Has anyone else experienced this or know the likely cause?
    sigpic

    Current: 2011 Skoda Superb Ambition Estate 118TSI

    Previous: 2006 Polo GTi
    Tags: engine, fluctuation, idle, kms, rpm
  • #2
    Scan it first
    Then check for the air leak? Check also the intake manifold runner flap.
    Performance Tunes from $850
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    • #3
      I think I will start with looking for an air leak. I assume that checking the intake runner flap requires disassembling the intake manifold?
      sigpic

      Current: 2011 Skoda Superb Ambition Estate 118TSI

      Previous: 2006 Polo GTi

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      • #4
        my idles rough first thing in the morning.... i hope my upcoming engine rebuild will fix that.... but yes, I noticed it too.
        2009 Skoda Superb Sedan - 3T ELEGANCE DSG FWD 7 Speed - 148kw 290nM (thank you Northside Eurpopean Mitchell ACT 02+ 6241 1111) 1.8 TSI...114,987km

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