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Car Jerking??

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Old 07-14-2008, 06:59 PM
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My car is jerking very lightly when i go from 40-45mph and only at that speed.. does anyone know what could be causing that???
Old 07-14-2008, 07:03 PM
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It it a continous jerk or just like a slam, as if someone hit you from behind or a feeling of going into a pot hole?
Old 07-14-2008, 07:07 PM
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Originally Posted by khooger' post='624055' date='Jul 14 2008, 11:03 PM
It it a continous jerk or just like a slam, as if someone hit you from behind or a feeling of going into a pot hole?
its just a continuous jerk, like a studder.. maybe from the engine? its very light but noticeable... happens like every 10 seconds unitl i speed up to 50 mph.
Old 07-14-2008, 07:08 PM
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How many miles on the car? How long has this been happening? Do you have a manual or automatic transmission?
Old 07-14-2008, 07:09 PM
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check the plugs?
Old 07-14-2008, 07:09 PM
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Originally Posted by BrianTx5' post='624061' date='Jul 14 2008, 11:08 PM
How many miles on the car? How long has this been happening? Do you have a manual or automatic transmission?
my car has 35000 miles.. and its auto 2005 545i sport package.. i just noticed it last week
Old 07-14-2008, 07:10 PM
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Originally Posted by khooger' post='624062' date='Jul 14 2008, 11:09 PM
check the plugs?
no i didnt.. i still have the warranty on the car, should i just get the dealer to check and would it be cover under warranty?
Old 07-14-2008, 07:14 PM
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What if you were to drive the car and shift manually? Keep it in second or third gear when you get to 40 to 45 mph to see if it still occurs. It might be transmission related.
I would bring it to the dealer since you are still under warranty.
Old 07-14-2008, 07:16 PM
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Originally Posted by BrianTx5' post='624070' date='Jul 14 2008, 11:14 PM
What if you were to drive the car and shift manually? Keep it in second or third gear when you get to 40 to 45 mph to see if it still occurs. It might be transmission related.
I would bring it to the dealer since you are still under warranty.
alright thanks for the advice.. will do on the way to work tomorrow.
Old 07-14-2008, 08:40 PM
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Originally Posted by xxrap985xx' post='624072' date='Jul 14 2008, 11:16 PM
alright thanks for the advice.. will do on the way to work tomorrow.
I took mine in to the dealer last week for an oil change and I mentioned a similar occurance (although I only noticed it twice at the speed you mentioned) and rough idle when cold. I also felt the car jerk when pulling away from a stationary. After a week I haven't noticed any problems recurring. Apart from the idle they seemed to think it was the transmission software. Make use of the warranty!


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