1995 Mercedes-Benz S320 Q&A

1995 Mercedes-Benz S320 Question: fuel pump relay always cut off from Ecu(Ecm)

fuel pump always cuts off and check out by bypassing relay and car still starts.but the voltage feed wire to the relay shuts off,I suspect from the computer.After few hours vehicle start up again.This will run for few more Km/Ml then it shuts itself same thing relay disconnected. -
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