My 1995 Oldsmobile cutlass ciera sl, 3.1 L fuel injected, keeps stalling on me when driving down the road or at an idle. It seems to do it more when the engine heats up. It will start back up after about 30second to a min. I checked the crankshaft sensor and that still has a magnetic pull. I tried replacing the ignition control modual and that didnt help. I had two mechanics helping me with that and they can't figure it out either. Please help me