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RPM fluctuation while driving at certain speed

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RPM fluctuation while driving at certain speed

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Old 06-14-2018, 12:36 PM
  #1  
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Default RPM fluctuation while driving at certain speed

Hey there,
While driving around at range from 60 to 80 kilometer per hour the rpm jerks or fluctuation a lot.
Feels like car want's to go ahead, but something is holding it back a little. Once you get over 85 works great. Doesn't matter if the car is warm or cold.

This is how it kind of feels, but only when accelerating - [MEDIA=youtube]kdmL68HIBVE[/MEDIA]
It only happens when driving at around that speed. If I floor it, then there is no issue and car gain speed smoothly. Or if I use S on multitronic, then the jerking isn't as noticeable and feels more smooth.

At service guy told me the ERG is clogged and needs cleaning, but couldn't tell me why there is such issue. There were no other errors thrown out.
I really do hope it's not torque converter as it can be quite expensive to replace.
Will bring the car tomorrow to another repair shop to see what they can figure out.

Anyone has some guesses or similar issue?
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Old 06-14-2018, 03:26 PM
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I don’t know what engine or year car you have. I would look at the torque converter failing or carbon build up
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Old 06-14-2018, 10:30 PM
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Originally Posted by KevinGary View Post
I donít know what engine or year car you have. I would look at the torque converter failing or carbon build up
it's c6 2005 quattro 3.0tdi multitronic.
Thanks! Will let know what in service they told me!
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