In the morning when the engine is cold the car idles well

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In the morning when the engine is cold, the car idles well for about 5 seconds with RMP steady. Then the RPM dips and idling becomes very slow and rough causing the cabin to vibrate (shaking the cabin). It can be best described as backfiring situation. Then, 20 seconds or so, the car goes back to normal. This is a 2010 300 SLK, and according to the computer of the service at the dealership, every thing is fine. Can you help?
  • 3605 day(s) ago by Ali Azad
Under: Mercedes Benz SLK Class #Cars
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Hi,
This type of problem arise due to fault in fuel supply system.There can be malfunctioning of sensors also.
 

Posted: 3604 day(s) ago


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