turbo whine......... more like a supercharger

[oblark]

Did the weekly shopping run and the old girl has got one hell of a turbo whine so much so it sounds like a supercharger.

The only thing I've done is to fit a S60R tcv instead of the 850 BCS.

Could the tcv be causing all the noise from the turbo ?

[Ade]

A whiney turbo is usually a turbo with a collapsing centre bearing in my experience!

[oblark]

Refitted the bcs and the whine stopped.

Looks like tcv is faulty.

[960kg]

Did the weekly shopping run and the old girl has got one hell of a turbo whine so much so it sounds like a supercharger.

The only thing I've done is to fit a S60R tcv instead of the 850 BCS.

Could the tcv be causing all the noise from the turbo ?


The direct replacement TCV from 850 to V70 -1999 is part number 9155936 which the one i bought new for my `97 V70 T5

The later TCV`s are 9473212 2000 - 2002
30670448 2003

The later ones operate at a different boost level at different revs and load!.......so the extra load at the wrong revs for your motor/ECU may be causing the extra stress on the turbo?