Q: car starts and idles great but dies when put in gear

it all started one morning i went to work car was running fine,,so i get to work shut it off .when i get in it to go home,it started to have a rough idle it was hard to keep it running at stop signs and low idles,ran good on the freeway but when i got into town -rough idle ,had to keep it running.in fact when taking off from a stop sign i would have to shift into 2nd {automatic} to keep it from stuttering.. on straightaways after it shfited into high gear i would have to put it back in 2nd to keep it going, . then finally one morning it actually died on the way to work, i let set for about 20 sec or so it started back up died again after about one milemade it to work after it would start but die when put in gear had to have it towed home i replaced the plugs /wires,no change,map sensor,coolant temp sensor trans temp sensor and iac valve still no change
My car has an automatic transmission.