The car started stalling on my way home from work in the heat of the day. In the morning when it was cool there was no problem but when it was hot and I was going at least 50-55 it would do it. I slowly discovered that when it stalled if I raised the hood and let the heat out it would restart sooner. I decided to replace the coil module because it was discolored but then it would not start at all even by putting the old module back on. (has not started since) The modules, coil pack test good I have tried more than 1 ECM and replaced the crank sensor, plugs , plug wires and still no fire. The wiring harness appears in real good shape but to extensively check it out is all I can come up with.