I have checked the spark. By putting my timing light on each lead, and also on the coil lead. There is no check engine light. When you turn ignition before start. The fuel pump is running. I was at first suspecting a fuel pump problem, but I know the car runs fine almost all of the time. Then just stalls and dies. It happened to me on the highway after 30 minutes of normal driving. Then it started dying. Would run again for 10 minutes. Then die again.
I am suspicious of the PCM. But have no idea where it is, nor what it looks like. My service manual is vague about it. I thought it might be the coil, or ignition module, but I had my timing light on the coil wire when the engine did it again, and it kept sparking all the way through the stall, until the engine actually died. So that would mean it's NOT the PCM, or coil? I did see a "miss" at high engine RPM on the coil spark lead (timing light again) and it did miss a little here and there. Tried to make sure my timing light was picking up induction correctly.
Fuel, air, or spark. Gotta be something!
Friday, June 19th, 2009 AT 7:28 AM