2015 Vauxhall Combo Problems

Just been serviced... went into limp mode today... Garage say glow plug 3 is down ... would this cause the issue

Warning light comes on when driving for an hour

Fitted new turbo.. After 500 yards engine revved out of control... killed ignition but engine kept running.. now blowing smoke out and not revving past 2500 rpm.. and we turbo blowing oil out...HELP

Won’t start when cold then engine hunting for few seconds then fine

Battery fine ,new one all lights on ,it’s not the starter motor as I have had it checked

Faint oil and battery light stays on after you have stated the van, after the normal bright lights go out. The faint lights stay on well after the keys are out and doors are locked on the van.