Well I do have a Vida unit, but I lost all the instructions so had to sort out again (all done now), so I ran the ETM test which came back fine (only 1.6 difference).
However, whilst running tests and familiarising myself with Vida, the problem re-appeared and I managed to graph it. Not sure if it helps, but screenshot attached. does Vida save this stuff somewhere so you can re-visit?
I also seem to have hundreds of fault codes recorded from all kinds of things that have happened in the past 5 years. Is it possible to see just the latest ones or should I clear down the lot so I can get a clearer picture?
What else could be causing the erratic running? I have ordered a new MAF sensor, as they are cheap enough, and will see if that makes a difference.
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 Current: 2001 Volvo V70 SE Auto LPG, and a cheap folding bike.
Previously: Honda CR-V, Jaguar XJ8, XK8 , Vauxhall Zafira, Several Honda Civics, Golf GTI Cabrio, Fiestas and old Minis
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