rough idling

  1. G

    Rough Idle on Cold Start

    Hi All, I am troubleshooting my 2008 C300 (170,000 mi) that has a rough idle until it gets up to temp. Seems like the engine wants to ramp up every 30 seconds or so and then calms back down. I have an Innova 5610 v2 scanner which is not showing any codes and there are no check engine lights...
  2. ds24215605

    C230 1997 Auto Sport Sluggish when starts and started to backfire!

    When i start up after a few hours parking the engine struggles to keep constant revs This goes away after a short time yet now the car has started to misfire / backfire when i depress the accelerator pedal quickly? It still goes ok on motorway but is getting sluggish as time goes on. I have...

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