Strange 330D boost issue.

Django x2 · 19 Jun 2019 at 09:51

tamas.wagner said:
Actually it is. My mechanic thought it is okay to leave it there as it is only moving the rod but nothing else. As you mentioned the blanking plates are fitted.

Remove the rod...

tamas.wagner · 19 Jun 2019 at 12:42

Vita said:
Usually you can get the swirl flaps mapped out which eliminates any issues with the mechanism all together.

Thanks, thats a good idea!

tamas.wagner · 19 Jun 2019 at 12:43

Django x2 said:
Remove the rod...

The rod is no possible cause of the issue. The actuator, which moves the rod is.

tamas.wagner · 19 Jun 2019 at 12:45

Meaker said:
It's not a boost solenoid issue is it? Due to modification i'll be replacing mine with a stronger/faster unit and it could be causing the bypass gate to open.

I have not thought of it. I have replaced the boost control valve as it seemed to be a possible cause of this intermittent power loss. I guess I should be able to see a fault in the diag regarding the faulty boost solenoid?

Vita · 19 Jun 2019 at 14:24

tamas.wagner said:
I have not thought of it. I have replaced the boost control valve as it seemed to be a possible cause of this intermittent power loss. I guess I should be able to see a fault in the diag regarding the faulty boost solenoid?

When you say boost control valve do you mean a pressure sensor? Or do you mean the map sensor?

If you have a boosting issue you need to check your vacuum lines first and foremost. For any splits etc

Meaker · 19 Jun 2019 at 15:38

tamas.wagner said:
I have not thought of it. I have replaced the boost control valve as it seemed to be a possible cause of this intermittent power loss. I guess I should be able to see a fault in the diag regarding the faulty boost solenoid?

You might not depending on what's going on but that's in my car, not sure about yours.

tamas.wagner · 20 Jun 2019 at 12:51

Vita said:
When you say boost control valve do you mean a pressure sensor? Or do you mean the map sensor?

If you have a boosting issue you need to check your vacuum lines first and foremost. For any splits etc

I mean the pressure converter under the intake manifold. As my power issues are intermittent, coming totally random, I don't think it is something with the vacuum lines.