1992 Oldsmobile 88 Olds 88 misses and dies when warm

I got an 1992 olds eighty eight royale from a friend of mine. It would run but then after driving it somewhere and then letting it sit, it would not start for them. They had taken it to a shop. The shop could not duplicate the problem but replaced the crankshaft sensor hoping that would fix it. The problem continued. I get the car and i put a new ignition module in and it works fine. For a week, then it started missing when idling and die. I changed the plugs, wires, tried another ignition control module, a new computer. The problem persist. It runs fine when cold, after it warms up it won't idle and misses badly. if i am on the highway it is ok. My thinking is that maybe there is a short to crankshaft sensor. I'm not sure what to do. Any help is appreciated.