Can the Electronic Wastegate Actuator be Replaced in Situ?

[peterjohnston]

Hello.

I'm hoping for some info on how best to approach my problem.

My car is a Sept 95 C220 CDI Auto with electronically actuated turbo wastegate.

Sometimes the car runs fine but mostly it seriously lacks power, suggesting an intermittent fault.

A diagnostic check (non dealer but good f.i engineer) reads "turbo overboost".

I am thinking that it's maybe a sticking actuator and was wondering if anyone knows whether it can be changed in situ and if a new one would need any sort of setting up?

There's a few turbo specialists who say that they can ultrasonic clean the actuator. Has anyone had any joy doing this?

Thanks a lot for your help.
Peter.

 

[Silver_Star]

Hello.

I'm hoping for some info on how best to approach my problem.

My car is a Sept 95 C220 CDI Auto with electronically actuated turbo wastegate.

Sometimes the car runs fine but mostly it seriously lacks power, suggesting an intermittent fault.

A diagnostic check (non dealer but good f.i engineer) reads "turbo overboost".

I am thinking that it's maybe a sticking actuator and was wondering if anyone knows whether it can be changed in situ and if a new one would need any sort of setting up?

There's a few turbo specialists who say that they can ultrasonic clean the actuator. Has anyone had any joy doing this?

Thanks a lot for your help.
Peter.

A September '95 car won't be a CDI.

 

[Alex Crow]

with that fault code it does suggest sticking turbo, but it could be either the actuator OR the variable vanes - or even a seizing linkage between the two.