2005 Chevrolet Cavalier Repair Question
Chevrolet Cavalier Engine Problem
Answer
I need the exact code numbers you have now not code descriptions?
-When was the last tune-up? Scan the computer again and comeback if any code/s are present. Might want to have the charging system checked out due to the dimming of the lites could be the alternator not producing the correct output voltages-start here and let me know
I have a 2000 chevy cavalier with a 2.4L that shot the same code, does the same exact thing. I have put an idle air control valve on it and that hasn't done me any good. If you come across a fix for this let me know because I have never heard of an O2 sensor causing these problems and on mine I have checked the charging system and its good as can be.
Try this clean out the EGR valve and check the fuel pressure if its within specs-