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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > vibration at idle



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      Yesterday, 10:04 PM   #1
bigxO
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vibration at idle

I’ve been noticing a vibration in my 328i E90 (N51 engine) for a while, and it seems to be gradually worsening. The vibration is only present when the car is idling—whether I’m at a stoplight or in park—and it disappears as soon as I start driving or increase the RPMs.

I suspect it might be related to the motor mounts or transmission mount, but I haven’t done any inspections or diagnostics yet. What could be causing this, and what’s the best approach to identify and fix the issue?
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      Today, 03:36 AM   #2
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If it's motor mounts, open the hood and watch the behavior of the engine when you blip the throttle. If the mounts are shot, the engine will rock side to side.
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