Hello, does anyone have a clue what would cause the EGR light to come on? I just took it in two days ago and it passed smog with no problem. It runs the same as it did before the light came on, I replaced the O2 sensor because it thought that might be it since its running so good. I did notice the light on after I made a hard right turn, but I don't see how that had anything to do with it. The engine has 20k on it along with the EGR and Carb and all the thromo valves, temp sensors etc.... Thanks Mike