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1998 Cadillac SLS engine

Tiny
FREDERICK TERRY
  • MEMBER
  • 1998 CADILLAC SLS
  • V8
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Engine running rough, shaking in park and driving eating alot of gas
Friday, November 27th, 2009 AT 2:57 PM

2 Replies

Tiny
FREDERICK TERRY
  • MEMBER
  • 2 POSTS
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Friday, November 27th, 2009 AT 3:00 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
I would assume you have a check engine light as well. Press 'Info' up, and 'on/off' to enter diagnostics, use 'Info' to scroll alphabetically to PCM. Press 'on/off' and then use info to get 'PCM codes?' And press 'on/off'. Record and report code(s). It sounds like you may have an ignition misfire. Could be a plug, wire, coil, or related.
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Friday, November 27th, 2009 AT 9:24 PM

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