Possible turbo/wastegate issue

[Mr Filipov]

Hello, it is me again

One problem solved another arises. To cut a long story short had a problem with lack of boost and the car going into limp mode constantly. A bit of hit and miss along the way and an inlet shutoff motor and a rebuild on the wastegate actuator it is back to normal. This is a CLS320 CDI 2007 before I forget to put it in.

Now, however I am getting a faint whistling noise when the boost is half pressure give or take and also when releasing the boost when I come off throttle. I do not mean the normal sound you would expect from a turbo car, it is more prominent than that. I am not sure if it a loose pipe connection along the way or if I have caused any actual damage during the 2-3 weeks of still using the car while having other issues. Did not really have a choice in it as this is the daily and it is my only car. This happened a couple of days after the inlet shutoff was changed which involves taking a lot of things apart including dismantling the turbo as well. Do not really feel like paying another person a few more hours labour to check it all either.

I know it can be a pain to figure out but are there any obvious ones that can be checked? I will try and get some sort of recording of it tomorrow.

Thanks

 

[turbopete]

check rubber boost hoses from turbo to inlet manifold and check the intercooler. soapy water can assist with this. it sounds like you have a boost leak to me

 

[Mr Filipov]

Already spoken to the guy that did the shutoff motor last week. Will see how I get on and if the parts find their places as it seems to be just fine today and take it from there.

Thanks for your input