86 EFI 302 stalls

86 F-150 4X4 w/ EFI 302 and OD Auto. Stalls on occassion. Any weather condition, engine hot or cold. Usually stalls right after start-up prior to going into gear. Will start again and drive 45 miles to work and as soon as I stop for the stop sign, it will stall again. Doesn't stall while driving, accelerating, or decelerating. No stuttering or shuddering either. Bought the truck not too long ago and haven't done a tune-up yet besides changing the eng oil & filter. Well over 100k on O-meter. Any ideas?