Would value people’s opinions - 69 plate shuttle, manual. It has always ticked over at an indicated 800rpm. Recently it has, on occasions and not all the time, started ticking over at 950 / 1000 rpm mid journey, for about 20 minutes before returning back to 800rpm. Did it today - 2 hour journey - about an hour in 1000rpm at traffic lights. Drove another 15 mins before being caught at more lights - still ticking over at 1000rpm. 5 mins later and the next red light - back to 800rpm and stayed like that for the rest of the journey. Any ideas? Vehicle is under warranty but would feel better equipped dealing with them if any of you guys think you know otherwise I’ll likely get the main dealer ‘no fault found’ treatment. Cheers, Mike