I have a 1990 740 non turbo with Rex Regina. A week ago the car began intermittenly hard starting, making it hard to diagnose the problem. I looked over the obvious--- changed cap and rotor, checked fuel delivery, then it died on me while running in the driveway, and after detecting or rather not detecting signal to the fuel injectors while cranking, I replaced the brain. The car started up and ran fine for a little over a week, and today I have the exact same symptoms. Before I plug in yet another ECU (my last spare), and risk damage to it, I was hoping that I might find someone else who has worked through the same problem.
Poorgie
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