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Engine Stumbing/Hesitating

  #1  
Old 02-08-2008, 01:05 PM
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Default Engine Stumbing/Hesitating

Hi guys. My 02 S80 T6 has developed a slight, intermittent "hesitation" (or miss?) shortly after cold start (one minute or so) and remains until it has warmed up. I notice it when I stop and idle - I can feel the engine stumbling a little. It doesthis in all gears, park and neutral. Acceleration is rough also but seems better after warm up. Would this bea coil pack starting to go?

Thanks,
George
 
  #2  
Old 02-09-2008, 09:55 AM
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Default RE: Engine Stumbing/Hesitating

Could be a coil pack any check engine light?
 
  #3  
Old 02-09-2008, 10:04 AM
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Default RE: Engine Stumbing/Hesitating

No check engine light at first but then eventually it came on intermittently and now has latched on. No messages though. I don't see any evidence of a spark plug change in the service history. It has 180,000 km - I should probably change them.
 
  #4  
Old 02-09-2008, 10:31 AM
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Default RE: Engine Stumbing/Hesitating

Find out what codes are in the system. That would lead to which cylinder it is.
 
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