Hi,

Is that possible to bad turbo causes overheating??

I had overheating problem since last year, and i invested almost $6000 on

fixing that problems (replaced - head gasket, heat hoses, water pump, new belt, radiator, every coolant related job, and etc..)

Now after fixing that thing, I still has overheating problems, shop told me i

got bad turbo that it causes overheating...

Have you changed the $10 coolant temp sensor? They are a known "weak" point and often go bad. Another item not listed is the themostat. How do you "know" you are overheating, just the cluster? Have you confirmed with the HVAC readout "trick"?

I replaced almost everything related to cooling sys in my car

+ I can only tell by temp gauges and when i check engine room after running few minutes, turbo is steaming / coolants are boring / top of the engine is extremely hot that i can cook some meat up there

Dealershop's master tech stated that bad turbo causes overheating... but i can not trust them.

turbo has nothing to do with the cooling system. Most issues with the system are: CTS, thermostat, fan switch, broken waterpump, air bubble, then maybe a headgasket.