2003 deville

2003 CADILLAC DEVILLE
V8 • FWD • AUTOMATIC
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VICEMOB
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  • 1 POST
2003 deville****** at stop and in park any other time runs perfect already replaced sparkplugs and tps
Dec 19, 2010 at 11:49 PM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
I am not sure what the asterisks are meant to represent, but I would assume you are describing a rough run. In some cases, misfires that are only noticeable at idle, are results of a compression related issue. The first thing to do would be identify the cylinder that is misfiring. Swap the ignition coil packs from side to side and see if that changes it. If not I would look toward possibly a cam follower that has been dislodged, and creating a combustion concern.
Jan 29, 2011 at 4:53 AM
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