2003 dodge 3500, 135,000 miles 6spd.

truck runs real weak when cool outside, lets say less than 60 degrees.
it used to just run bad for a few minutes, it now takes about 30 minutes of highway driving, to get it to where it runs right.
it has absolutely no power about 2000 rpm, until it has run for 30 minutes or so.
it also will die at a stop sign, when you push in the clutch, it will try to drop to idle, but sometimes it will stumble and just die. it will start back up, or if you are coasting you can dump the clutch and it will fire back up.

i am really at a loss on this problem, i keep thinking maybe it is the ambient air temp sensor? but i have also read about loose injector lines?

any other ideas as to what it might be? it died about 6 times this morning in 10 miles.

thanks, chris

 

Below 60 is a pretty high low point, are you sure it isn't related to anything else?

Any idea what your boost, egts etc look like when it runs right and when it doesn't?

 

got this going on 2 different threads, had me pretty confused. check both.