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vibration at idle
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| 10-31-2024, 10:04 PM | #1 |
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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? |
| Yesterday, 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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| Yesterday, 07:00 PM | #3 |
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I’ll give that a try and see if there’s any movement when I blip the throttle. If the engine does rock side to side, is there a specific way to check which mount (or mounts) might be the culprit? I might just end up replacing all the engine mounts and the transmission mount since I’ll already be in there, if that’s the issue. Also, any recommendations on replacement mounts? I want to make sure I get ones that will last or be better.
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| Today, 04:19 AM | #4 |
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I'd always replace both engine mounts if I were you. I can recommend the transmission mounts from Rogue Engineering (at least for manual).
https://www.rogueengineering.com/Rog...air_p_137.html
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E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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