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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Should there be slight rotation play in the driveshaft?



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      11-28-2019, 08:09 AM   #1
porsche959
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Should there be slight rotation play in the driveshaft?

6mt 2006 325i

I am getting slight bucking when letting off the gas, which leads me to believe it’s a bad guibo or driveshaft joint. When I went under the car and grab the driveshaft there is a little bit of rotational play. Is this normal?
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      11-30-2019, 10:08 AM   #2
Efthreeoh
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Normal to have a slight bit of gear lash in the drivetrain, which you can find by rotating the driveshaft.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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      12-01-2019, 08:20 PM   #3
porsche959
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Quote:
Originally Posted by Efthreeoh View Post
Normal to have a slight bit of gear lash in the drivetrain, which you can find by rotating the driveshaft.
Thanks after some reading - 5-10degrees of play seems normal.
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      12-02-2019, 05:08 AM   #4
Efthreeoh
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Quote:
Originally Posted by porsche959 View Post
Thanks after some reading - 5-10degrees of play seems normal.
Yup, that's about right. I've never actually measured it, but between 5 to 10 deg. is what you'll find.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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