i have done the resolder on my fcim and added the resistor. I have not been having to plug up truck on cold nites truck starts a lot better and runs better since the resolder. This morning about 40 degrees started fine and let idle for about 5 mins. truck started idling real low and would rp up and then idle back down low about 400 rpm. only done this once while idling, got in truck and had no throttle at all. turned off and tried to restart had to crank longer than usual. thruck had throttle but had a miss until got to normal temp. have about 162,000 miles and has had oil and fuel filters changed run rotella 15w40,and all the injectors have been replaced within he last 30,000 miles. oil changed at 3,000 miles intervals.