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GTi_roadkill

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About GTi_roadkill

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  • Present cars
    Porsche 944
  • Former cars
    Porsche 911
  1. I have an 86 944 with 44K miles that doesn't want to start. The fuel pump does not appear to have any power to it. The voltage measured, even with the jumper across pins 30 and 87b of the DME relay, is less than half a volt. When the oxygen sensor is disconnected, the voltage level to the pump is at the proper level and the pump runs correctly. This only works with the jumper on the DME relay connections. When the relay is replaced and the O2 sensor is disconnected, there is still the half volt to the fuel pump. Does this point to the DME(ECU) or the O2 sensor?
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