Opel Zafira 2013: Black smoke, loss of power and unsteady engine - Possible malfunction in the boost pressure system?

Hello folks! I'm currently struggling with a few issues with my 2013 Opel Zafira (gasoline engine, already 195,976 km down). The thing is doing some really strange things: When accelerating, black smoke comes out of the exhaust and the check engine light is on. Then I have a loss of power and a restless engine that jerks when accelerating and makes really annoying noises, like hissing and whistling noises. As if that wasn't enough, it also stalls when idling and shakes a lot. I have a suspicion that all this fuss could have something to do with a malfunction in the boost pressure system. Have any of you ever experienced something similar? How did you fix it? And what was your experience with the workshop? I was really fooled on my last visit to the mechanic, so I'm a bit cautious at the moment. It would be great if you could share your experiences with me. Many thanks in advance!

(Translated from German)

14 comment(s)

Quotation:
@CarlyMechanic wrote on
The P0299 error code indicates that the turbo or supercharger has a below expected output. Since you've already replaced the turbocharger and the boost pressure control valve, the issue might be with the vacuum lines or the wastegate. Check for any leaks or blockages in the vacuum lines. If they're fine, you might want to inspect the wastegate for proper operation. Please keep us updated on your findings. Do you have any other questions?

What is the easiest way to check the wastegate? It was possible to move it when it was removed. At how much bar should it open?

(Translated from German)

Quotation:
@Matze4387 wrote on
What is the easiest way to check the wastegate? It was possible to move it when it was removed. At how much bar should it open?

The easiest way to check the wastegate is to apply pressure to it and see if it opens. It should start to open between 5-15 psi, but this can vary depending on the vehicle. If it doesn't open at the correct pressure, or if it doesn't move smoothly, it might be faulty. Please let us know how it goes. Do you have any other questions?

Opel Astra J power loss and reduced engine power message

Quotation:
@Eyherabide wrote on
Opel Astra J power loss and reduced engine power message

Start by checking the air filter and fuel filter for any blockages, as these can cause power loss. If they are clean, inspect the mass airflow sensor (MAF) for dirt or damage, as it can affect engine performance. If the issue persists, it might be best to have a professional diagnose the problem. Keep us updated on your progress, and feel free to ask if you have more questions!

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