[raul_e92]

Hello. I have a 320d 2011 184hp and sometimes when I drive constant let's say between 1800 and 2800rpm i get some random stuttering for a fraction of a second. What could it be? I am thinking to change the 2 pressure convertors ( part number 7810831 )

[Russbmw]

Mileage?

Would suggest having the intake walnut blasted first, before changing things.

[raul_e92]

Originally Posted by Russbmw

Mileage?

Would suggest having the intake walnut blasted first, before changing things.

The car has 200.000 km.
I don't know if it is just an impression but it does not feel like it has the same power under 2000rpm as it had before.

[jacbo]

I have a similar sounding issue on my 330d. The o-ring for the intercooler pipe going into the intake manifold has split. I will be replacing it in a couple of days so will let you know if that fixes it. Might be something worth looking at.

Very easy to take off and inspect so worth a try before spending big money. Mine is on 130,000 miles.

Cleaning out intake manifold is a shout too as mentioned. Makes a considerable difference and cleaning the throttle while it's off is good too.

[Silver Streek]

EGR can also give these symptoms, easy to check if it's excessively dirty by pulling off the intake pipe from the turbo.

[jacbo]

Originally Posted by jayapana

I have a similar sounding issue on my 330d. The o-ring for the intercooler pipe going into the intake manifold has split. I will be replacing it in a couple of days so will let you know if that fixes it. Might be something worth looking at.

Very easy to take off and inspect so worth a try before spending big money. Mine is on 130,000 miles.

Cleaning out intake manifold is a shout too as mentioned. Makes a considerable difference and cleaning the throttle while it's off is good too.

Seems to have fixed the issue for me after a quick test drive. Was like a tenner from local dealer. Have a quick check of the intercooler pipes I reckon. At least then you can eliminate it if yours is fine