I need help!!! I have a 1999 dodge ram with a 5.9L magnum v8. It has a rough idle issue. I've replaced the throttle position sensor, replaced the plenumgasket, replaced the idle air control module. Replaced spark plugs, wires, distributor cap, rotor, o2 sensors, both bottom and top throttle body gaskets. I threw some injector cleaner in the fuel. Ran a few tanks through it and no change. It starts fine, idles for a bit and starts stalling idoing rough and spitting sputtering and backfiring. I cannot figure it out. When I rev it up its fine but when the rpm comes down it dies. I really want this issue fixed, I need anyone and everyone to give me all of the ideas to fix this. I cannot figure it to and it's nickel and diming me for everything that I have. Please help!!!