Almost stalling... 2001 Rolla

My 2001 automatic transmission Rolla recently was at the dealership for a complete seal set replacement for using massive amounts of oil. My PVC valve and other gaskets and seals were all replaced. Now, occasionally at a stop, either in Drive or Neutral, my car will almost stall. The RPMs will drop from 600 to 400 and start to stutter. I have to switch to neutral and rev the engine to keep from stalling out. Any suggestions?

Thanks,
ROKnight

maybe the dealership didnt reset the distributor right...cause if you got all new seals for oil leaks then they would have replaced a seal in there too...sounds as if they retarded your timing a little bit by doing that.

sounds like timming...need to advance it....

sorry i should have told you that you might have a vaccum line off or leaking...

scrapper..