I have99 sl2. 194 k. My problem is it cranks up and runs fine cold. Drive until warmed up when I turn car off and try to recrank it turns over and won't start. After it cools off its fine again. First thought was coil. I replaced both coils, plug wires and spark plugs. Still having same symptoms. Any ideAs where to go next would be greatly appreciated. Tks for looking. Bruce

 

Have you ever replaced the ECTS, Bruce? If not, I'd recommend you do that. Do NOT get one from Advance, Autozone, etc., get it from a GM dealer that still sells or can order Saturn parts. Make sure you get one that's brass tipped and get the pigtail too. All together, probably cost you around fifty bucks.