Transmission Vibration at steady throttle??

dazz100 · 02-02-2021, 05:19 AM

Hi

I have a 2007 E90.
After about 20 minutes driving I get vibration from under the car that appears to be related to the transmission. The vibration feels like the car is driving on badly formed corrugated road.

It happens as low as 40kph, up to about 100kph.
The vibration appears to be related to engine rpm and not drive shaft/ wheel rpm.
The vibration occurs with a steady throttle. If I add throttle, the vibration goes away. If I take my foot off the throttle, the vibration goes away. It is worst at 80kph to 100kph.

Has anyone experienced something similar?

E92William · 02-02-2021, 07:24 AM

Could this be torque converter shudder for you? Usually it will do it when the drivetrain is warm and accelerating with light throttle. Goes away with more throttle input and in manual mode

02-02-2021, 05:19 AM	#1
dazz100 Enlisted Member 12 Rep 45 Posts Drives: BMW 325i E90 2008 Join Date: Apr 2015 Location: New Zealand iTrader: (0)	Transmission Vibration at steady throttle?? Hi I have a 2007 E90. After about 20 minutes driving I get vibration from under the car that appears to be related to the transmission. The vibration feels like the car is driving on badly formed corrugated road. It happens as low as 40kph, up to about 100kph. The vibration appears to be related to engine rpm and not drive shaft/ wheel rpm. The vibration occurs with a steady throttle. If I add throttle, the vibration goes away. If I take my foot off the throttle, the vibration goes away. It is worst at 80kph to 100kph. Has anyone experienced something similar?
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02-02-2021, 07:24 AM	#2
E92William Banned 2033 Rep 2,025 Posts Drives: 2008 E92 328xi Join Date: Nov 2019 Location: Miami iTrader: (0) Garage List 2008 BMW 328xi [0.00]	Could this be torque converter shudder for you? Usually it will do it when the drivetrain is warm and accelerating with light throttle. Goes away with more throttle input and in manual mode
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