hi my mothers vectra has a noisy whine on turbo when cold but does clear when warm 10-15 mins of driving, car drives fine and is on 146 k miles, any ideas? is this a sign that the turbos going to shit itself cant see any splits in hoses ect and still drives fine. anyone?

 

they do have a lil whine when first start/cold untill engine warms up.

you know when the turbo is going on the Z19dt lumps as they whistle like hell when there needing replaced