This is really weird, but I am at my wits end. When temperatures are over 50 degrees, my 96 Dakota 4X4 3.9 V6, five speedruns great. When it gets colder than 50 degrees, it will run for about 8-10 minutes, then stalls like it is running out of gas. It will sputter and eventually restart, but act like I have a couple of bad spark plugs. After running rough for about 10 minutes, it will smooth out, and start acting normal once again.
It only does this in cold weather- never in warm. I have changed the coolant temperature sensor.

I am frustrated enough that I am thinking about parting with my truck, and I like it in every other way (except the ABS/brake light also won't go off).

Any suggestions? It is almost dangerous to drive once the weather turns cold.

 

there was a post somewhere with the same issue...turned out to be a bad crankshaft sensor for him. They are about $40 if you shop around...I replaced mine last month (NAPA was the cheapest) when I rebuilt my engine - they are fairly easy to get to with the engine installed.

 

if that doesn't do it, i've seen an IAT sensor go bad and do this too

 

Where did you buy coolant temperature sensor. One time I changed mine and got the new one from lcl auto zone type parts house. About 3 weeks later my truck did the same as yours. Took it to the delar and it was the temp sensor. I suggest buying any sensors from the delar.

 

I changed the crankshaft position sensor CPS, and it instantly fixed it. It's running better than it has in a long time, now.