2008 sebring 2.0l cdr diesel
 

my sebring hesitates on acceleration then for some reason it will clear itself for a few weeks and runs great then the problem returns, sometimes when i go up hill the power drops and i struggle to reach 40mph. I have the vw passat engine. any ideas what the problem is?

Have you got any warning lights on?

is the power back to normal when you turn off and on again? same problem with mine but noone find any problem when it cuts the power(turbo) i m only turn off the car and straight on again back to normal until doin again

Engine management light comes on only after five or six attempts at turning engine on and of then will go of again after a couple of hours normal running also noticed sudden burst of high heat coming through heaters just before and after power loss

yes sometimes, will be ok for a week or more then sometimes full power will last a couple of mins

Following the principle of "going for the easy things first" I would clean the injectors using only Forte' diesel injector cleaner poured into the fuel filter (injector cleaner doesn't work just poured in the tank, at least it never has for me). This is the first thing a diesel mechanic would do. Cost £12 to £14 for a tin of Forte'. It may or may not work, but at least you've not spent much money, or wasted much time. And you'll have clean injectors.
After that you can go for fuel starvation, pumps sucking in air as well as fuel due to cracked parts in the fuel system. The last VAG diesel I did was a shim-tappet 5cyl in an Audi 100, I have no further in-depth knowlege for that engine.

Leedsman.

probably problem is green or brown turbo pipe.they look like a cable..