Performance issue BMW E90 320d
Posted: Mon Oct 07, 2024 8:46 pm
Greetings to everybody,
I own a 2006 BMW E90 320d with an M47 diesel engine.
I just acquired the clutch assembly along with the flywheel.
Shortly thereafter, I encountered an issue with performance and a humming noise that I can elucidate as follows: "When I accelerate in second gear and exceed 2300 rpm, upon attempting to shift into third, the rpm decreases as expected. However, when it reaches approximately 1800 rpm, I hear a humming noise akin to air being ground." This occurs during the shifting process as the rpm declines to around 1800.
It also occurs during gradual acceleration in second gear, when I can hear it as well.
One month later, I began to lose power until reaching 2500 RPM, at which point the vehicle accelerates flawlessly.
I replaced the air filter and EGR valve, after which the issue of power loss seemed to be resolved.
The previous EGR was obstructed by a wet carbon oil combination, despite having been cleaned three months before.
However, I now see that the issue is progressively reemerging, and the buzzing noise persists.
I own no error codes.
200,000 kilometres
No discernible oil leaks or depletion.
At high speeds, the automobile seems to function well; yet, it exhibits issues mostly in urban environments.
I apologise for the lengthy explanation.
Thank you in advance.
I own a 2006 BMW E90 320d with an M47 diesel engine.
I just acquired the clutch assembly along with the flywheel.
Shortly thereafter, I encountered an issue with performance and a humming noise that I can elucidate as follows: "When I accelerate in second gear and exceed 2300 rpm, upon attempting to shift into third, the rpm decreases as expected. However, when it reaches approximately 1800 rpm, I hear a humming noise akin to air being ground." This occurs during the shifting process as the rpm declines to around 1800.
It also occurs during gradual acceleration in second gear, when I can hear it as well.
One month later, I began to lose power until reaching 2500 RPM, at which point the vehicle accelerates flawlessly.
I replaced the air filter and EGR valve, after which the issue of power loss seemed to be resolved.
The previous EGR was obstructed by a wet carbon oil combination, despite having been cleaned three months before.
However, I now see that the issue is progressively reemerging, and the buzzing noise persists.
I own no error codes.
200,000 kilometres
No discernible oil leaks or depletion.
At high speeds, the automobile seems to function well; yet, it exhibits issues mostly in urban environments.
I apologise for the lengthy explanation.
Thank you in advance.