S5 MOP failed but no code.
07-20-07, 07:09 AM
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S5 MOP failed but no code.
My 90 GTU has been running like crap. Extremely rich and no power. I started looking for possible causes and saw that my Metering Oil Pump (MOP) lines where completely empty. When I tested the MOP it failed. The voltages at idle and when raising RPM failed by a long shot. All other checks of the pump passes i.e. the ECU and harness.
When I checked for codes all I got was 34 the BAC valve. I have the BAC valve blocked off so I know why that code is there. Does anyone know why this would happen? Why would my Electrical MOP stop pumping and ECU act like it is in limp mode without a code to back it up?
When I checked for codes all I got was 34 the BAC valve. I have the BAC valve blocked off so I know why that code is there. Does anyone know why this would happen? Why would my Electrical MOP stop pumping and ECU act like it is in limp mode without a code to back it up?
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