I was drove approximately 700 miles pulling a trailer when the truck started to sorta cough or choke upon accelerating, shifting through the gears. A shop ran test and the waste gate code came up. Is it possible it's stuck closed? It also threw a code for 3 possibly injectors but he said a ICP might or could be clogged. I just drove it an hour, 56 miles and it ran fine if it was the injectors will it run fine at times and then run like at other times?