what2be Posted 2 hours ago Share Posted 2 hours ago If i replace the ECU with a used one from the same model car, will the car start and die a few seconds later until I get it reprogrammed? I bought a used ECU and swapped it out but when I took it to the shop they told me the ECU couldnt be the problem because it did the same thing the old ecu did (crank but no start). He said if it was the ECU the car would start and then die a few seconds later until he reprogrammed it. Is this correct? Quote Link to comment Share on other sites More sharing options...
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