Truck stalls when put in park

[Potatoflinger]

For the past couple of days my truck (03 4.0 SOHC, auto) has been stalling when I put it in park. Some times it will just idle very low for a few seconds and then recover but other times it will just stall completely. It seems like it only happens when the truck is warmed up, but I can't tell for sure because it doesn't do it every time. It has been fairly cold recently, around 30-35*F, I'm not sure if that has anything to do with it though. The truck runs and idles normally except for when it is put in park. Any ideas?

 

[94twodoor]

Check for vaccum leak. Also might need to bump the idle just a hair. I did it on my 94 mustang gt. It never died at park again.