Join Date: Aug 2000
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Re: After changing exhaust SES light came on??
I'm betting you have a bad o2 sensor or 4. When I pulled my system out to work on the truck, put it back in then I had a bad sensor. I was told that all the banging around I did with the pipes and stuff destroys a coil inside of them... I broke 2 of the 4. SES light came on and I checked it with a snap-on scanner and saw the readings were waaaaaay off on two of them.
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