I have a 96 Ram 1500 with the 3.9 liter V-6, 130,000 miles on it. First thing in the morning, this truck starts and runs beautifully, after driving it (to the store or work or wherever), it does not want to idle when I get back in it until I drive it about a block or so, then it will idle fine, until I shut it off again, then its the same thing all over again. After it sits for a few hours, it runs good again until I shut it off. I am at a loss on this one, have replaced the TPS, plugs, wires, distributor cap, rotor button, does anyone have an answer for me? (The check engine light isnt on either, has not been since I replaced my o2 sensors)