PLEASE HELP!! 2007 ram 1500 stalling.

[hammer7911]

I'm sorry if this is a duplicate post. But I've search the forums for this problem, thought I found it. But nothing has worked. I have a 2007 dodge Ram 1500 3.7l V6 with 46,000 miles on it. I went to start it last monday to go to work and it stalls out. It will start, but if the gas pedal isn't pressed it will putter for 10-15 seconds then shut off. If I give it gas nothing sounds wrong. Once I let off the gas it will stall in about 5 seconds. I took it to one garage and they told me it was the map sensor and the plugs, and that it wasn't a fuel problem(that's what I told them I thought it was). Wanting to charge me an arm an a leg I change the map sensor and the plugs myself. The old plugs were fouled. I tried to start it again and the same thing happened. I put a scanner on it and got po300(random/multiple cylinder misfire) and po301(cylinder 1 misfire). I thought maybe it was the coil on the first cylinder so I changed it. Same thing. I read on this forum it might be a dirty throttle body, so I took it of and cleaned it. It wasn't horrible but it needed a good cleaning. I also cleaned off the sensor that was in the air resonator box. I tried starting it. Still the same thing. I'm thinking I'm probably going to bring it to the dealership. But 2 years old with 46,000 miles on it this is ridiculous. I had an eighth of a tank of gas in it so i put in a couple more gallons just to see if it did anythng. I saw on one forum it might be the idle air control, but my engine doesn't match the pictures in the Haynes book I have.Someone told me it might be the fuel sending unit. But at this point everyone I have talked to has their own opinion. There is also black soot coming out of the tailpipe, but no water. PLEASE HELP.

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