Vauxhall Meriva diesel intermittent rough idle/vibration

[Pop2023]

Hi. I have been having this issue 1.6 2015 Meriva diesel, when I've driven a short distance and stop for five minutes upon restarting at low revs/idle I get this noisy vibrating from the engine, a little blip of the throttle seems to sort it out. I have some videos of the engine and it shakes about or has increased noise. Wish I could post video. Any Idea what it could be. I don't know if it's related but I also had a issue with engine idle fast even after a 15 mile drive.

[GreenV8S]

Maybe a glow plug issue on one cylinder making it slow to come to life. Or a dodgy injector, or something unrelated. Would you expect to fix it yourself? If not, you might as well stop speculating and let an expert take a look at it.

[Pop2023]

Hi. Thanks for the reply. I certainly won't be attempting to fix it myself. I have already left it with a garage for a week and they couldn't find anything wrong with it, replication isn't that easy as it's intermittent. I can drive 15 miles in the morning and same in the afternoon with no issues whatsoever and do that over multiple days, but today the issue happened again exactly as I described. A short 2 mile drive, stopped for about ten minutes and upon starting sounded like a bag of spanners. A few blips of the throttle cleared the sound. I wish it would throw a code or something so we have more to go on. The idle did surge recently, only happened the once, I know the SCV is a common issue so I'm wondering if that's relevant and possibly linked to the other issue.