Newbie here. Just wanted to say how much this site helped me. I had a 5 hour trip from hell yesterday with my '03 f-450 pulling an enclosed car trailer loaded down. I did a search this morning on rough idle, stalling, loss of power problems and was linked to this site. I had already figured out is was not fuel contamination. Found out that someone here had the exact same symptoms with an '02 7.3. Called my parts buddy at the local Ford dealership and picked up an ICP for the truck. The connection was good but the ICP was bad and my beast of a pick-up finally started acting right. THANK YOU to all that help diagnose here on this site. It saved me a ton of time and cash!