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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 330d Not as sweet as it used to be on idle



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      05-13-2011, 06:11 PM   #1
SomeRandomer123
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Drives: F30 328i Luxury - Sport Auto
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330d Not as sweet as it used to be on idle

Recently, we have noticed that on idle, our 330d has a small amount of excessive vibration and rough noise. It's a small change - if you haven't owned the car, you would never notice. It happens at any engine temperature and it seems the longer it is idling, the worse it gets. As soon as you leave idle, the engine is back to normal and as powerful as ever! Return it to idle and it starts again from smooth to rough. It's as if one of the six cylinders is firing just out of time so I'm tempted to believe it's an injector problem but more of an electrical injection problem perhaps?
54,000 Miles
Subjected to lows of -21 Degrees C during winter months.

Any ideas or experiences?
Thanks

Daniel
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Gone: 2006 BMW E60 520d SE 6MT
Gone: 2009 BMW E90-LCI 330d SE 6MT
Current: 2012 F30 328i Luxury 8AT
On Order: 2015 Audi A6 Avant Ultra, Black Edition (sorry!)
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