My SE has 165K and was running like a champ. The check engine light has been on for a good 2 years, but was "just" emissions. Now I have been troubleshooting sensors and valves. Both O2 sensors, EGR valve, Mass Air Flow Sensor, throttle body cleaned, and replaced. The car idles up as high as 1.5 and then so low it stalls...like it is breathing or something. It always stalls at stops.I have heard the car will run like this is I put new parts in , but do not reset the computer through the dealer...Any ideas???