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2000 S4 code P300b

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Old Sep 1, 2009 | 11:04 PM
  #1  
gchase65's Avatar
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Default 2000 S4 code P300b

check eng. light came on code 300b drilled down and scanner showed misfires on cyl 1, 4, 5 changed coil pack on those still running like S. any ideas?
 
Old Sep 2, 2009 | 12:10 AM
  #2  
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icm??? maybe?? not sure which modules control which cylinders. .. maybe fuel pressure bad??
 
Old Sep 2, 2009 | 02:36 PM
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Swap ICMs, see if the misfires follow the ICM. However, if they're both bad, this test won't work
 
Old Sep 2, 2009 | 10:50 PM
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Thumbs down Strike two

Well replaced all 6 coils and swapped ICM and no luck still runs like S. Any more ideas?
 
Old Sep 2, 2009 | 11:09 PM
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check compression and fuel pressure.. ohm test the injectors as well..
 
Old Sep 8, 2009 | 08:02 AM
  #6  
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Default Fixed

Thanks for the input, both ICM mods were bad I swapped out with a friend and his worked and fixed the problem.
 
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