alright, ive got a 92 f250 with 351w. Is whats happening is my light stays off until I let off of the gas eg. when you coast into town. Then it comes on and stays on until you get back up to speed on the highway. Normally its stays off but idleing for periods of time it will come on after prolonged idle. Ive pulled the codes and it gives I think 33 which is egr code but ive checked vac lines and look good. I know someone else in the forums is haveing same code. Im not sure which way to go with this.