I have recently had an issue where there seems to be excessive vibration coming from somewhere in the engine bay. It went away once speed increased, but was also intermittent. Took my car to the garage and they diagnosed the over-run pulley on the alternator, apparently these are fitted to reduce the vibration and backlash, but they seize up and will free themselves for short periods, however eventually they will seize for good before breaking the alternator. Cost £125 including labour (not a main dealer)
Forgot to say it's a 2013 SD4 auto @ 70knives.
I hope his helps if you have had similar problems

that's worth making a note of, as our motors get older.
Dave DAVE.

As a complete newbie to that area of things, is there any way to manually check the current condition to pre-empt the issue? FL2 TD4 GS 60 reg Facelift - so many issues
2019 DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental
Now greatly regret selling the Outlander. MPG of the FL2 is atrocious and so are the fuel bills. Fun though 😎
Couldn’t afford the fuel bills so back to an older Mitsubishi Outlander PHEV. Significantly better than I remembered it to be…

This check required belt to be removed.
https://www.freel2.com/forum/topic30988.ht...tor+pulley

Lots of info here
https://www.freel2.com/forum/search.php?se...rch_time=0 FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 79k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)