[88911coupe]

Wow, very timely...been running into same issue on my '88. However in my case the "no start" would happen after a 30 minute drive where I let the car sit for a few minutes then tried to restart. It would turn over fine but never fire. I took the relay out and noticed a broken/missing chunk of solder and ordered a new one from Pelican (KAE). BTW, I popped in the old "working" relay I kept in the glove box and car fired up. Then installed new relay but had same issue, car would (on occasion) not re start after 30-40 minute drive. I shook the relay and it fired right up...so assumed the new relay was buggy out of the box, which seemed really unlikely. Pelican promptly sent me a replacement and SO FAR has worked but I'm still suspicious. Tested the RPM/Reference sensors but I did it at the DME connection itself, both tested perfect and are the BMW versions installed during rebuild 2 years ago. Question to OP...did you car die at the red light? In my case the car runs perfectly while its running...only had issues on restarts. What confuses me is what to test on the relay if it happens again.