[ykm3]

Hello,

Three months ago i bought my 2009 e92 335i xDrive. About a month ago the car started going into a limp mode after 4.5 rpm. The code was for "overboost". My mechanic changed both diverter valves and the issue was fixed... untill two days ago. I drove the car very hard on the highway and the car went into a limp mode again. Yesterday I went for a drive and noticed a strange noise coming from the right side of the engine. When the engine is warm the noise is quieter, but here is a video of it after a cold start:

https://www.youtube.com/shorts/5vt2PwAXqk8

Should I be worried about the sound that comes behind the right front wheel in the video?

The car has 261234 km on the dash and it was serviced at 260500 km.

I am new to these kind of forums so I apologize if i have violated the forum rules.

[sparkyte]

Hello,

the video sounds normal to me maybe the camera is not catching it properly? What codes do you have now? Btw im from Bulgaria as well with the same car and engine, you can add me on FB - Mario Vidinov

[marcell1401]

Hi, whats the error code?

The ticking you hear from the right side of the engine is the evap valve, conpletely normal, dont worry.

You can open the oil filter and check for shaving in oil.

Everything stock? Stock map?

[konstat]

Originally Posted by ykm3

Hello,

Three months ago i bought my 2009 e92 335i xDrive. About a month ago the car started going into a limp mode after 4.5 rpm. The code was for "overboost". My mechanic changed both diverter valves and the issue was fixed... untill two days ago. I drove the car very hard on the highway and the car went into a limp mode again. Yesterday I went for a drive and noticed a strange noise coming from the right side of the engine. When the engine is warm the noise is quieter, but here is a video of it after a cold start:

https://www.youtube.com/shorts/5vt2PwAXqk8

Should I be worried about the sound that comes behind the right front wheel in the video?

The car has 261234 km on the dash and it was serviced at 260500 km.

I am new to these kind of forums so I apologize if i have violated the forum rules.

You should get some logs of your wastegate duty cycle and boost when the limp mode happens. That ticking noise by the turbos could possibly be wastegate rattle. Since you’re getting an Overboost code it’s possible one of your wastegates are stuck closed although I do think that’s uncommon for the N54. You may also want to consider changing your wastegate solenoids.

Are you seeing any other codes besides overboost

[ykm3]

Hello, so today i went to scan the codes.

Those are the codes that the car has at the moment:

https://ibb.co/2NFwcqS

The car stopped going into limp mode by itself and also the sound that i was worried about went away.

However the code for the gearbox is new.

The earliest my mechanic can see the car would be in January so would it hurt the gearbox if I drive the car for a month or two with the code? It doesn't have any symptoms of a gearbox failure.

The car is full stock