My "service engine soon" light went on today, the same day as I happened to take my car in for an oil change. The guy at the oil change place checked the codes and said it was my catalytic positioning sensor. He said sometimes an electrical surge will cause this to happen, turned off the light, and said if it came back on again to get it checked more thoroughly. Well, it came back on again. What does this part do, how serious is it, and what should I do? Two other symptoms: I've noticed the RPMS are pretty high, about 35,000; and I've noticed an electrical burning smell after I turn the car off.
Jul 17, 2008 at 11:15 PM