Ive noticed lately that I get a sort start/stall when cold. I ended up finding out that it doesnt do this with the egr vacuum line unplugged from the valve, furthermore as its idling with vacuum line unplugged if i plug it back in for curioisty sake while idling it almost stalls the car. So I changed the solenoid that seemed to stop the starting issue for a lil while but seems like once the PCM learns the new part the issue returns. I also notice that theres alot of misses with egr plugged in under light load when cold. egr valve is new motorcraft. Am I missing something here? the egr valve has an effect on starting and idling? i thought egr was suppposed to open only under light load medium load. could it be a dpfe? the fuel trims at idle are near perfect with no vac leaks. And one other weird thing I noticed is if i reset the computer it starts fine almost like once the OBDII mon's pass then the issue starts again. if i unplug it and leave it it drives better for a time once the car learns the egr is unplugged the car shifts harder no idea why.