jje1953 Posted July 14, 2011 Report Share Posted July 14, 2011 I have a warning light on saying "Service Engine Soon", and was trying to determine if an actual problem is causing that light to come on, or if it's more or less "scheduled" to come on at certain intervals. Have gone through the current codes, and there is no indication of any engine problems. The car is slow to start sometimes and idles a bit rough to begin, then drives normal within a minute or two. Other than that, no detectable issues. Any input appreciated. Thanks. Link to comment Share on other sites More sharing options...
BodybyFisher Posted July 14, 2011 Report Share Posted July 14, 2011 Post your codes both current and history, something is turning on the check engine light, maybe a misfire, its not a scheduled light Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Ranger Posted July 15, 2011 Report Share Posted July 15, 2011 if it's more or less "scheduled" to come on at certain intervals.No such thing. If it comes on, an emission related fault has been detected. Link to comment Share on other sites More sharing options...
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