Hello guys!

I`m having some trouble with my C250 CDI. When i start the car for the first time (doesn't matter if it's morning or noon), the car idles alrdight but lacks power when driving away. Also, it feels like it's choaking when i don't give it alot of gas. If i floor the gas peddal, it doesn't choack anymore but it still doesn't have power. It's not in limp mode either. I know that limp mode limits the revs to 3k. Mine are not limited... but still the car lacks power.

This goes on for about one minute after the first startup. Then the car regains normal power and it doesn't choak anymore either.

Also, if i stop the car and start it again it still runs ok, even if i wait about 1-2 hours. So the problem is only after the first startup.

 

waste gate on the turbo not closing.
There are about 8 sensors that operate the turbo control unit. could be any one of them or could be a faulty turbo

 

But wouldn't that trigger an error code in the dash?

I've got no errors...

 

Sometimes it happens with my car no errors
talked to the MB tech and that is what he told me

 

Just guessing , maybe glow plugs then ok when the engine is warm.

Also could be incorrect computer input compensating system when the engine is cold .

Expert advice is needed.