idles good, dies in drive???

[El Bombero]

Alright fellas, here is my newest problem. I start the truck up, (zz4/700r4), were talking a cold start here, and it idles at about 1600. Ok great. When I go to put her in drive after she drops down to about 1100, she slowly dies. I start her back up, she will idle at about 1100 for a second or two then die. I talked to a mechanic friend of mine, and he said its possible that my torque convertor could be locked up. Im stumped at this point. Later today, Im going to jack up the rear end and start her up and put her in drive and see if it makes a difference with the wheels off the ground. I will let ya know. But if y'all have any advise or have been through this, I would love to hear about it. I will be back on later and let you guys know what happened. Thanks for your time!

P.s. it got down to 40 degrees last night! so when I say cold start, take it as you will