99 Dodge 1500 will turn over and idle rough but wont run lon

Any information that can be given is appreciated! I drove the truck 4 miles one day and it started bogging down, I parked the vechile and 30 mins drove it home fine. Checked all fluids. Oil. Radiator. Tranny. And all were fine. Then drove two miles to work and it bogged down doing 30 mph and as I gave it gas it just sounds like its being flooded. I got it towed home and thought it was the fuel pump so I dropped the tank and installed a new one. Wasnt the problem! (And the filter is on the pump so the filter cost 130. And the pump 250. I figured just but the pump. Kill 2 birds with one stone.) So I checked my sensors and I replaced the idle air control (iac) and nothing changed. I hooked a computer up to it and it says a cam shaft sensor, which is the pick up coil on the distributor. I checked the sensor and it works properly. A mechanic friend told me that he had a problem with a truck like this and he replaced the 02 sensor on the cat. And it ran fine afterwards. Im getting spark and gas to the engine, and not sure what it could be so any help what so ever would be great.