Nu trage pana in 3000 de ture

[spoot]

Salutare comunitatii bmw! Din pacate am si eu o problema cu masina. Nu vrea sa mai traga pana in 3000 de ture dar cand ajunge la 3000 zici ca explodeaza , adica trage de rupe. Filtrele toate sunt schimbate de 7000km aprx , motorina pun doar de la rompetrol. Ciudat e faptul ca nu da nici o eroare , nimic in bord. Posibil sa fie debitmetru? Diseara merg sa ii curat admisia , egr-ul si racitorul de gaze + filtu epurator si verific toate furtunasele de la vacuum. Aveti vreo idee ce as mai putea verifica? multumesc!

[alex230ro]

pune-o si pe tester sa vezi ce erori ai,ceva legat de presiunea turbo,cred ca un coleg cu 535d te-ar lamuri mai repede .

[spoot]

O alta intrebare, in mod normal atunci cand pornesc motorul, tija de la turbina nu trebuie sa se miste? La mine nu se misca deloc... Fiind biturbo , asa ar trebui sa faca? Eu stiam ca trebuie sa se miste in momentul cand se porneste motorul.

[alex230ro]

de pe net:

I've not experienced this on the BMW, but have some experience with Turbo's in general from my Evo forum friends...

 

I'd say it could be 1 of 3 things.

 

The first is that you could have either a leak or blown off one of the intercooler hoses. These pipes take the forced air from the turbo and feed it through the intercooler (to cool it) and then into the intake. When this happens the air / fuel mixture becomes very erratic and usually a very rich fuel mixture is used hence the excessive use of diesel. The erratic fuelling will cause the stuttering issue. This is probably the cheapest issue to resolve, however, if it only happens at low rpm (ie when using the smaller turbo and not the larger turbo) then I'd say this is unlikely to be the cause unless the hose problem is where it is connected to the smaller turbo. Any further along the airflow and the problem would be more consistent across the rev range.

 

Second is a faulty actuator / blow off valve. The actuator controls the boost level in the turbo and the blow off value vents excess pressure past the turbo as part of the boost control. If the actuator has become stuck it could be that the turbo is not being allowed to generate boost properly. You mention a wooshing sound when you come off the throttle, this is the blow off valve opening to release the turbo pressure to prevent turbo stall which is normal, although I've never been able to "hear" it in my BMW whereas the Evo blow off valve sounds like an air tank releasing pressure every time I change gear! The BMW uses a closed ventilation system I believe, so when the blow off valve opens to release the pressure in the turbo housing it is vented into the cars exhaust rather than to open air. I don't know if actuator problems are common on BMW turbos but I think that this would where I place my bet at this point.

 

Thirdly is a blown turbo. However, I would suggest that this would be significantly noticable in driving. There would be a big difference in low rpm power, followed by a big kick in the back when the larger turbo comes on. Im not too sure if this is likely to be the case, your post mentions hesitation but then also mentions no power at low rpms so difficult to know exactly how the car is driving.

 

In any case, I would say the problem lies with the turbo setup somewhere and you need to get it looked at before you go on a long journey. Hopefully it's not the turbo, especially as your car isn't that old. How many miles have you covered?

 

Let us know how you get on.

 

sau

 

 

http://www.bmwland.co.uk/forums/viewtopic.php?f=5&t=127579

 

si asta cred ca e ceea ce ai tu

 

 

http://www.bimmerforums.co.uk/forum/f15/2005-e61-535d-loss-low-down-power-t83303/

 

 

din simptome seamana.

Edited September 3, 2012 by alex230ro

[spoot]

Multumesc mult ptr reply...o sa verific diseara toate furtunasele de la vaccum , poate reusesc sa ii dau de cap.

[spoot]

Am rezolvat problema. Era un furtunas de vaccum fisurat...multumesc alex230ro!! Edited September 3, 2012 by spoot