Rough idle when warm

2003 CADILLAC DEVILLE
130,000 MILES • V8 • FWD • AUTOMATIC
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EYEU81
  • MEMBER
  • 3 POSTS
Rough idle when warm, have replaced MAP sensor, plugs, cleaned throttle body with Seaform.
Jan 6, 2011 at 5:40 AM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
I thought there was a bulletin at some point for possible camshaft issues. At any rate, it depends on how rough, to suggest a direction. Is there a check engine light along with this symptom? Another thing to look at, would be the fuel trim values, to indicate if the system is going rich or lean during the rough run.
Feb 11, 2011 at 6:36 AM
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