A Body Stalling at Idle

The Demon has been running great......but the other day, it started acting up at traffic lights, then got worse and wanted to stall out whenever you tried to idle with the tranny engaged.

I suspected a vacuum leak, but found nothing but some loose intake bolts.....could be the gaskets, but I was at wits end with it. I took it to an experienced mechanic..........they found a problem with the advance on my distributor, and changed it for me (good move....it was old and questionable)..........they gave it a general tuning after the installation, but the idle problem still haunted them.

They told me that they suspect the torque converter is "locking up" and wanting to stall the motor, and it needs to be changed. I have NEVER had this kind of problem before, so I'm at a loss.

I've explained that the intake was loose, and was suspect for vacuum leaks..........BUT, they still think it's the tranny.

I've driven Mopars all of my life, and dragged 904's a lot in the 70's......This seems like vacuum to me because you just have to flutter the gas a bit and you can usually keep it going............

COULD the converter act the same way? ??????

I need some input fast on this one...............................

The car runs great.......just stalls at idle when in drive.........just does NOT want to keep running.