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Questions for you EFI experts
I have a customer with a donor build cobra that (randomly) will not start after it warms up. After much research I diagnosed it as a bad ecu. I swapped in a known good one and the problem went away. Sent the old one out to be repaired, re-instlled and everything was good. Started it hot at least 20 times. Customer drives the car to NH and when stops for gas it will not restart. Heres a clue. The only way to get it to restart hot is to trip the impact switch to shut off the fuel pump. Found this out by accident. I can duplicate this over and over. Why does shutting off the pump allow it to start?
Is it possible something in the ECU is still bad?
Thanks Mike
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