93 sable stalling, idle problem

I have a 93 sable and it has been trying to stall while driving and sitting. Replaced plugs and gave oil change. Wires were put in 6 months ago. what could it be?

anyone?

I'm guessing you have 3.0 when you changed plugs you may have knocked off vacumm hose or at least have a leak now ck near passanger firewall that is where the map sensor is let me know what you find