JannikRacer

Problems with BMW X6 Diesel 2012: Black smoke, loss of power and suspected defective boost pressure regulator - experience and tips wanted

Hello everyone, I have a problem with my BMW X6 Diesel, built in 2012. At the moment, the car is causing me a lot of stress: black smoke when accelerating, the engine control light is on, loss of power, irregular engine running, jerking when accelerating, loud hissing and a whistling noise when accelerating, plus running out at idle and vibrations, really annoying. I suspect a defective boost pressure regulator. Do any of you have experience with this and can give me a few tips? What did you pay for it at the garage and how did the repair go? Thanks in advance!

(Translated from German)

19 comment(s)

Quotation:
@CarlyMechanic wrote on
It seems like the boost pressure regulator might be sticking or not functioning properly. If pressing it down restores power, it's likely that the regulator isn't moving freely as it should. You might want to consider replacing the boost pressure regulator. Please remember to disconnect the battery before starting any work. After replacing it, please let us know if the issue is resolved. Do you have any other questions?

Ok thanks, I'll have the mechanic replace it tomorrow, replace the original one as it was still working. Vacuum can at the EGR, all vacuum hoses, charge air hose, intake hose, everything is newly installed. With a new turbo+ boost pressure regulator. Where I realized that the boost pressure regulator was jammed. But it can be pushed down easily, and when the car is running it can no longer be moved. Question can I drive like this if I push the actuator halfway or all the way down? Thanks for your answers

(Translated from German)

Quotation:
@Mani39 wrote on
Ok thanks, I'll have the mechanic replace it tomorrow, replace the original one as it was still working. Vacuum can at the EGR, all vacuum hoses, charge air hose, intake hose, everything is newly installed. With a new turbo+ boost pressure regulator. Where I realized that the boost pressure regulator was jammed. But it can be pushed down easily, and when the car is running it can no longer be moved. Question can I drive like this if I push the actuator halfway or all the way down? Thanks for your answers

It's not advisable to drive the car with the boost pressure regulator manually adjusted as it could lead to other issues. The regulator needs to function properly to maintain the correct boost pressure. Driving with it manually adjusted could potentially damage the turbocharger or engine. I strongly recommend getting the boost pressure regulator replaced as soon as possible. Please keep us updated on your progress. Do you have any other questions?

Quotation:
@CarlyMechanic wrote on
It's not advisable to drive the car with the boost pressure regulator manually adjusted as it could lead to other issues. The regulator needs to function properly to maintain the correct boost pressure. Driving with it manually adjusted could potentially damage the turbocharger or engine. I strongly recommend getting the boost pressure regulator replaced as soon as possible. Please keep us updated on your progress. Do you have any other questions?

Thanks will be changed tomorrow. Hope it works again. On the BMW e90 n47 built in 2007 I was told that the 5pin connector only has 4pins, could it be that on the new turbocharger with servomotor the contacts are assigned differently on this servomotor, i.e. all 5pins, that the contact is not there. if the old boost pressure controller is put on the new turbo tomorrow. It should work, right? It still worked with the old one. Or had no FS

(Translated from German)

Quotation:
@Mani39 wrote on
Thanks will be changed tomorrow. Hope it works again. On the BMW e90 n47 built in 2007 I was told that the 5pin connector only has 4pins, could it be that on the new turbocharger with servomotor the contacts are assigned differently on this servomotor, i.e. all 5pins, that the contact is not there. if the old boost pressure controller is put on the new turbo tomorrow. It should work, right? It still worked with the old one. Or had no FS

Yes, if the old boost pressure controller was working fine with your car, it should work with the new turbocharger as well. However, it's important to ensure that the connectors are compatible and properly connected. If there's a mismatch in the pin configuration, it could lead to improper functioning. Please have your mechanic check this during the replacement. Keep us updated on your progress. Do you have any other questions?

Quotation:
@CarlyMechanic wrote on
Yes, if the old boost pressure controller was working fine with your car, it should work with the new turbocharger as well. However, it's important to ensure that the connectors are compatible and properly connected. If there's a mismatch in the pin configuration, it could lead to improper functioning. Please have your mechanic check this during the replacement. Keep us updated on your progress. Do you have any other questions?

Thanks, I went to the mechanic today to install the old boost pressure regulator. I now have the power again. Everything is working. If there are any further problems I will contact you again. Did you know where I can extend the contract with Carly, here on the APP

(Translated from German)

Quotation:
@Mani39 wrote on
Thanks, I went to the mechanic today to install the old boost pressure regulator. I now have the power again. Everything is working. If there are any further problems I will contact you again. Did you know where I can extend the contract with Carly, here on the APP

I'm glad to hear that your car is working properly again! As for extending your contract with Carly, you should be able to do that directly in the app. If you're having trouble finding the option, you might want to check under 'Account' or 'Settings'. If you still can't find it, I recommend reaching out to Carly's customer support for assistance. Do you have any other questions or is there anything else you need help with?

Quotation:
@CarlyMechanic wrote on
I'm glad to hear that your car is working properly again! As for extending your contract with Carly, you should be able to do that directly in the app. If you're having trouble finding the option, you might want to check under 'Account' or 'Settings'. If you still can't find it, I recommend reaching out to Carly's customer support for assistance. Do you have any other questions or is there anything else you need help with?

Ok thanks that was all at the moment, thanks for your help

(Translated from German)

Hello, I have changed the turbocharger + boost pressure regulator. Nevertheless the error 004191 occurs! Can you please help me what else I can do Thank you very much

(Translated from German)

Quotation:
@W.Maerz wrote on
Hello, I have changed the turbocharger + boost pressure regulator. Nevertheless the error 004191 occurs! Can you please help me what else I can do Thank you very much

The error code 004191 in BMWs usually relates to the boost pressure control. If you've already replaced the turbocharger and boost pressure regulator, it's possible that there might be an issue with the wiring or connectors. Check the wiring and connectors for any signs of damage or loose connections. If everything seems fine, it would be best to have a mechanic perform a diagnostic test to pinpoint the exact cause of the issue. This is a safety-relevant issue, so I recommend getting it checked out as soon as possible. Please keep us updated on your progress. Do you have any other questions?

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