My 1987 Monte Carlo SS has been stalling and i can't seem to figure out whats causing it. It starts up perfectly and when the engine heats up it idles perfectly as well. But when you give it gas after a few seconds it stalls. If in park, i can rev it as long as i want but if i don't let it come down easily it stalls, and when I'm in reverse or drive after driving for a few seconds it will stall.
I changed the fuel filter, and i replaced the vacuums line but still she stalls out. Anyone know what could be causing this? Your help is really appreciated!

 

what rpm does it idle at in park ?

 

Yea, sounds like you could be idling too low. Did this issue just start?