I believe your truck is equipped with the 5.3 engine. What RPM's does your truck idle at in park and while in gear once warm? The 5.3 engines have a history of low idle/rough idle at stop lights (etc.), with the vehicle sometimes dying. Before throwing a lot of money at the truck, pull the vacuum line off the fuel pressure regulator to see if its wet. If the inside of the vacuum line is wet or has gas coming out the rubber boot at the end of the vacuum line, the fuel pressure regulator is bad.
Your idle when warm should be around 700-750 RPM. If your idling lower, look at the pressure regulator.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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