ETM Problems - 1999 Volvo V70 T5 Manual - UK
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Hi All,
I have been battling my problematic ETM (I think) for a while now, and I could really do with some advice. Below I have tried to list out as much as I can about the problems I am facing and what steps I have taken to resolve them. I have a couple more tests to do (listed below) when I get back to my parents where the car is being stored. Can anyone help me make an informed decision on what to do next? Symptoms: Pre-rebuild (ECU Testing) - Intermittent ETS lamp and slight stumble just before illumination - ECM-91A7 - NO limp home mode - ECM-261A Long Term Fuel Trim, Bank 1 - Upper Limit (very intermittent - more common on LPG) Post-rebuild (ECU Testing) - Hunting for idle after codes cleared - settles sometimes (as it learns?) - Surging while driving all the time - Intermittent ETS light - ECM-91B7 - NO limp home mode - ECM-261A Long Term Fuel Trim, Bank 1 - Upper Limit (very intermittent) ETM Details: White Label Magneti Marelli Part Numbers (From Label)
Part Numbers (Software)
Diagnostic Steps Taken:
Note - see throttle desired position fluctuating despite pedal being in one position Note - both throttle position potentiometers seem relatively close to each other to me? Diagnostic Steps Remaining: Replace Engine Management Relay Run wire between fuse and ETM plug Check voltage across pins 5+6 Check voltage from fuse #2 to negative battery terminal Options Remaining:
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