I have a 2005 Ram 1500 V6 3.7L. It has had the problem of shaking bad while idling, no acceleration power and would cut off on me.
I recently just spent $800 at the dodge dealership to replace the fuel pump, sparkplugs and they put a battery in and the MAP sensor. No acceleration and it is still cutting off! help please, could it be the throttle position sensor?

 

Take it back to the dealer. They just threw parts at it, hoping it would fix it..... at your expense. They have your money, now, MAKE them fix it.