[ladius]

Ok folks, name that sound...

Is it serious? What is it?

Some background, I last heard this sound when I had a vanos replaced two years ago and the shop replaced it, is the vanos? (shop didn't explain what it was).

[gbalthrop]

Originally Posted by ladius

Ok folks, name that sound...

That sounds like an electric motor trying to move a flap, about every 5 seconds, and the sound is loudest UNDER the Intake Manifold, where the DISA Flaps are on your 2006 330i.

Here is the TIS circuit diagram for the DISA Actuators (motors):
https://www.newtis.info/tisv2/a/en/e...supply/p2Ru7TJ

You can click on any BLUE Component ID# and get additional information like "Installation Location" or "Connector View" and here they are for DISA Actuator 1 (Y6540):
https://www.newtis.info/tisv2/a/en/e90-330i-lim/SQTqm16
https://www.newtis.info/tisv2/a/en/e...i-lim/HRT4Ufa5

I would disconnect the connectors on the two DISA Actuators, one at a time, to try to identify which one is "sounding off", but you can probably feel vibration in the case during the ~ 1-second buzz.

George

[ladius]

Thanks for the reply! Sorry, i don't have notifications turned on, will now.

Do you know if this needs to be replaced when it's making this sound?

Originally Posted by gbalthrop

That sounds like an electric motor trying to move a flap, about every 5 seconds, and the sound is loudest UNDER the Intake Manifold, where the DISA Flaps are on your 2006 330i.

Here is the TIS circuit diagram for the DISA Actuators (motors):
https://www.newtis.info/tisv2/a/en/e...supply/p2Ru7TJ

You can click on any BLUE Component ID# and get additional information like "Installation Location" or "Connector View" and here they are for DISA Actuator 1 (Y6540):
https://www.newtis.info/tisv2/a/en/e90-330i-lim/SQTqm16
https://www.newtis.info/tisv2/a/en/e...i-lim/HRT4Ufa5

I would disconnect the connectors on the two DISA Actuators, one at a time, to try to identify which one is "sounding off", but you can probably feel vibration in the case during the ~ 1-second buzz.

George