thanks jason i'll give it a try - i still have never got a check engine light and my idle since i replaced the idle control valve has been right about 600 with no fluctuation until today (about a month later) however when i run the a/c the rpms go up about another 100 - but i fugured since it was running smoothly and not bouncing around anymore i would leave it be - gonna try your method first and then the fuel pressure regulator if that doesnt work - intake manifold is my last resort and since its intermittent im almost positive its a sensor/regulator/computer issue and not mechanical one -one stupid question: where is the throttle position sensor? anyone have a picture i cant find it in the manual