09-06-2022, 10:40 AM | #1 |
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2015 335i xDrive Vibrating Under Acceleration
As the title states, my 335 has been shaking hard as of late when accelerating under load. This mainly occurs when I'm full throttle but not past the kickdown. There's a very noticeable vibration that doesn't go away as long as you stay on throttle. I've seen some threads referencing misfires due to plugs/coils but this almost feels like a transmission issue as the motor still seems to pull cleanly and i have no lights/codes. For reference, I'm at 67k on stock tune/plugs/coils/etc. Has anyone had a similar issue? Thanks in advance for any info!
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09-06-2022, 10:54 AM | #2 |
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To clarify- the reason I believe this is a transmission issue is because I've only noticed this in the past couple months after my trans fluid/filter were changed. Further, the vibration/shaking seems to happen as the car lurches forward and then stops- almost like the trans grabs and then releases over and over. Any experience I've had with a slipping auto trans results in RPM but no movement, but I really have no other ideas as to what could cause this
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09-07-2022, 08:16 AM | #4 |
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Fluid level is fine, I checked it recently after noticing this issue- if anything the level was slightly over full and the fluid still looks brand new (no clutch material or other contamination). I think on the initial fill after the fluid change it was slightly low, but I only drove a mile or two before getting back home and topping it off so I cant imagine that being an issue.
For reference, this is the closest thread I have found but unfortunately there was no solution posted. https://f30.bimmerpost.com/forums/sh....php?t=1516329 EDIT- Decided to get an xDelete license based on some other threads and magically my issue went away... lets hope a fluid change is all I need otherwise this could get expensive fast Last edited by DADPAID; 09-07-2022 at 12:19 PM.. |
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335, f30, n55, vibration, zf8, zf8hp |
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