I have more of a gas smell when it runs but i was thinkin that had to do with the EVAP leak. @magnethead im not getting any codes. and yeah you can hear the fuel pump prime and it sounds fine to me, no unusual noises

 

oh forgot to mention i recently seafoamed it. please dont tell me it unlodged sludge only to get it stuck in a really bad spot

 

clogged cat. could be the prob. had a 96 with a bad one it would start idle terrible then die thought is was the fuel pump turned out to be the cat. after we replaced the pump

 

apparently it was a sensor i have yet to find out which tho. i swear if it was just the iac or the tps going bad and i had to pay him to change it im gonna be pi$$ed

 

ended up being a few bad connections and a fuel relay, thanks for the help tho guys

 

I am kinda of having the same problem. I'm on TPS number six(Dodge OEM part), MAP sensor number two, engine coolant temp number one, new plugs, and a new cat.

Truck runs great when it wants now but it is still haunted by P0121. Could it be the connectors? How do I change them? Could I clean the terminals?

 

check the for the sensor coltage to the sensor should be 5 volts output sensor should be .5 at idle and 4.5 at wot this can all be done with the key on engine off if you don't have 5 volts from PCM you need to Trace it back to there or possible check the sensor ground