Seems I am getting symptoms of a dodgy actuator. Not sure what one to order as looks like the current one is aftermarket as there is no numbers on it. My turbo is 770895 , which hella actuator is the most likely one to take a gamble on.
Which hella actuator
- Thread starter Mrbudgie
- Start date
ray_hennig
MB Enthusiast
Why gamble?
Use an EPC to find the genuine MB part number and buy that. Or, if aftermarket is preferred for a reason, cross-refer to an exact match for the MB part.
Try here:
RayH
Mrbudgie
New Member
Alot of the turbos seem to be matched with different actuators so trying to gauge if there was a common one for my year maybe
W1ghty
MB Enthusiast
If you take it off there will be a number that starts with G , something like G277 . I think the number is underneath the actuator
W1ghty
MB Enthusiast
Take it off and clean it
forums.mercedesclub.org.uk
OM642 Actuator clean out and refit .
Due to the sunshine , I had done this job 3-4 years ago so I thought I would remove the actuator again and clean it out . Turbo shield removed , 3 bolts . Then the split ring on the actuator arm popped off very carefully you could tie some cotton on it , but I only did this when I refitted it ...
forums.mercedesclub.org.uk
W1ghty
MB Enthusiast
What symptoms are you getting ? Any fault codes .
W1ghty
MB Enthusiast
The actuator, inlet port motor for the swirl flaps , exhaust back pressure sensor and I think the egr are all on the same fuse so that a problem on one can “look” like it’s caused by another .
Mrbudgie
New Member
Yes 123900 low boost pressure, couple times had the limp mode where there is no engine light and a restart of car sorts it. 80 percent time cat is fine sometimes when accelerating the revs build but the speeds doesn't as if its not boosting. I can't find any split pipes.
Mrbudgie
New Member
Had the actuator off took apart greased it cleaned oil off it. So looks like if want to replace it I'll have to order a new turbo and actuator together as this one is aftermarket so no markings on it to know which one I need. Will give car a drive later see how it is.
