1995 service engine soon light comes on after driving about 30 minutes. Why?

Asked by Jul 23, 2013 at 08:32 PM about the 1995 Cadillac DeVille

Question type: Maintenance & Repair

Not sure about what it means about
trim.

3 Answers

21,495

something to do with the fuel and exhaust as it passes the o2 sensor if on and off at times, you may try another grade or brand of fuel, or maybe a failing o2 sensor, many other possibility's that's most probity.

1 of 1 people found this helpful.
257,895

http://www.ehow.com/about_6398385__service-soon_-light-come-on_.html

2 of 2 people found this helpful.
125

Here's where modern day mechanics have you by the .............,Your better of just paying what I call the rip off fee :) of about $80.00 for them to hook your car up to a machine to diagnose your problem (even the url above comes at a cost) in the good old days the mechanic was trained to know by prognosis what's wrong with your car and didn't charge you for something he should already know. probably not helpful but to the point

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