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-   -   Rattle noise (http://www.bimmerfest.com/forums/showthread.php?t=670090)

loso81 01-14-2013 04:09 PM

Rattle noise
 
ive noticed that sometimes if i rev my car while in park i hear a "rattle" noise, could that noise possibly be coming from something dealing with the exhaust?????

sptt144 01-15-2013 12:01 AM

Those are your wastegate actuators if you have a 335. The actuators (open and closing rods) are loose in the gates and will rattle (search YouTube). Just had mine replaced at dealer last week. They have newer upgraded parts. Now I don't hear it anymore.

Sent from my DROID2 using Bimmer App

DT335 01-15-2013 09:06 AM

loso,

I had to replace my vacuum lines to eliminate that waste gate rattle. I never had to replace the actuators. You might want to check with a mechanic, first.

Greatdane84 01-15-2013 10:40 AM

Loso,

I just got an 09' 335i, and occasionally I was hearing the left exhaust on startup. The actuator which controls the butterfly valve was causing this and I simply disconnected the actuator from the trunk area so my valve is always open. Yet to hear the noise again.

You can search for "golf tee mod" and find a lot of results about this.

CALWATERBOY 01-15-2013 12:51 PM

Quote:

Originally Posted by loso81 (Post 7313152)
ive noticed that sometimes if i rev my car while in park i hear a "rattle" noise, could that noise possibly be coming from something dealing with the exhaust?????


Without a doubt.

Most things are possible.

Search suggestion: Exhaust Rattle


.


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