So guys over the last three days I've had a recurrence of the "engine service required" but in specific circumstances. I've been driving it to work with no issues. It sits all day in the car park. Pulling out of work to drive home the error message pops up. I pull over, switch off and restart immediately then the car performs perfectly normally with strong performance. I think that's an electrical issue rather than a vacuum issue and I'm suspicious of my slow responding TCV. My mate has an oscilloscope...... I'll get the signal to the TCV tested next week.
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