Cobalt4209

got a whistle sound that goes on and off around 2000k-2500k during part throttle coming from the turbo area seems like something to do with duty cycle opening and closing wastegate not sure, anyone have any ideas whats causing this ??

cobaltssdude420

k04?

Cobalt4209

Yes k04 it seems like the wastegate solinoid goes funky and starts making a whistle like studdering noise at part throttle while cruising and then there’s a faint whistle type clicking noise when I go wot.