Why does the check engine light come on
Asked by demontoad117 Jul 04, 2012 at 11:23 AM about the 1991 Chevrolet S-10 RWD
Question type: Maintenance & Repair
Ill be driving over 80kmh and my service engine
light comes on, then after about 45 minutes it
turns off. When the light is on i feel the engine
lag almost like a very short sputter. Could this be
bcs of my exhaust leak causing compression
problems or another issue?
5 Answers
demontoad117 answered 12 years ago
Tom, i got the obd reading and its my oxygen sensor bcs i have a exhaust leak @ high speeds my sensor senses a problom and trys to adjust the mix causing the fluctuations in my engine.... This came straight fromm the tech.
demontoad117 answered 12 years ago
Tom the engine doesnt shut down it just surges and withdraws like a sputter it doesnt die
If you go to an Autozone they will check your check engine codes for free. You can then look up the code online to hep diagnose.
This was happening to my S-10. Problem was a weak/bad spark plug. Engine codes should tell you that for sure!
