I have this 04 Cayenne that starts then cuts out. I see on fuel pump relay 2 the signal from the ECM cuts out and shuts the power out to the fuel pump. Sometimes it bounces back and powers the pump then drops again. Fuel pump relay 1 doesn't have this problem. I jump relay 2 out car runs fine. To me the ECM is bad but just asking if anyone seen something weird. Also can I put a used EC into this car. If so do I need the immo code and program it or just the immo code.
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