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Originally Posted by nair
(Post 4530444)
Additionally there is a noise from the wheels I suppose which sound like I have steel utensils in the car and they are slightly clanging against each other. |
Originally Posted by nair
(Post 4530444)
My 2018 GT TSI has now started making creaking and other noises when I drive it over uneven roads. |
Originally Posted by satyanu28
(Post 4530345)
I have a 2016 GT TSI. While taking U turns or medium speed turns I notice a hum sound. This sound disappears on straightening the steering. Can someone shed light on this please? |
Originally Posted by satyanu28
(Post 4530345)
I have a 2016 GT TSI. While taking U turns or medium speed turns I notice a hum sound. This sound disappears on straightening the steering. Can someone shed light on this please? |
Originally Posted by neoonwheels
(Post 4530725)
I had similar issue in my Jetta, it was fixed by changing transmission oil. Give it a try. |
Originally Posted by graaja
(Post 4530734)
The Jetta has the DQ250 wet clutch gear box that has transmission oil. The Polo GT has the DQ200 which is dry clutch and does not have any transmission oil. It could be something to do with the EPS unit. |
Now coming to the biggest misconception for the DQ200 - as can be seen in the below diagram, there are not 1 but 2 separate oil circuits |
In the DQ250, the mechatronics is housed inside the gearbox, surrounded by DSG oil, whereas in the DQ200, it is flanged onto the gearbox. This means that, in the DQ200, the mechatronics has a separate oil circuit, independent of the gearbox oil circuit. |
Originally Posted by anshumandun
(Post 4530927)
There was an article recently on teambhp that mentioned that it is a misconception that the DQ200 does not have transmission oil. |
Originally Posted by anshumandun
(Post 4530927)
The main difference is that DQ250 uses multiple clutch plates so it has a separate oil circuit for that while DQ200 does not have multiple clutch plates so no separate oil circuit. |
Originally Posted by graaja
(Post 4530943)
If this is the case, not sure what is the frequency at which VW changes this oil. I have not seen this as part of the maintenance schedule. DQ200 is a mystery gearbox indeed! |
Originally Posted by SLK
(Post 4531004)
What is that supposed to mean? - Both DQ250 and DQ200 are dual clutch gearboxes, the former has a wet clutch, while the latter has a dry clutch. |
Originally Posted by d_himan
(Post 4526716)
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Originally Posted by anshumandun
(Post 4531036)
DQ250 has a wet clutch because each of its 2 clutches has multiple plates and to manage the heat and friction between plates, it has a separate oil circuit. |
Originally Posted by anshumandun
(Post 4531036)
DQ200 has a dry clutch because each of its clutch is single plate |
Originally Posted by nair
(Post 4530444)
My 2018 GT TSI has now started making creaking and other noises when I drive it over uneven roads. Unfortunately I live in a slightly interior section of Bangalore and the immediate roads around the place I stay are horrible. A 200m stretch I have to take almost daily to pick my wife from her cab dropoff point is unpaved and extremely uneven. The doors have developed a creaking noise which in itself is painful. Additionally there is a noise from the wheels I suppose which sound like I have steel utensils in the car and they are slightly clanging against each other. Anybody here faced this issue? Any advice will be greatly appreciated. |
Originally Posted by satyanu28
(Post 4530345)
I have a 2016 GT TSI. While taking U turns or medium speed turns I notice a hum sound. This sound disappears on straightening the steering. Can someone shed light on this please? |
Originally Posted by nair
(Post 4530444)
My 2018 GT TSI has now started making creaking and other noises when I drive it over uneven roads. The doors have developed a creaking noise which in itself is painful. Additionally there is a noise from the wheels I suppose which sound like I have steel utensils in the car and they are slightly clanging against each other. Anybody here faced this issue? Any advice will be greatly appreciated. |
Originally Posted by neoonwheels
(Post 4530725)
I had similar issue in my Jetta, it was fixed by changing transmission oil. Give it a try. |
Originally Posted by graaja
(Post 4530943)
I always was under the impression that DQ200 has oil only inside the mechatronics which is sealed for life. This is new information and definitely makes sense. |
If this is the case, not sure what is the frequency at which VW changes this oil. I have not seen this as part of the maintenance schedule. DQ200 is a mystery gearbox indeed! |
Originally Posted by SLK
(Post 4531004)
What is that supposed to mean? - Both DQ250 and DQ200 are dual clutch gearboxes, the former has a wet clutch, while the latter has a dry clutch. Transmission oil which lubricates the gears is a separate thing and will be found in all gearboxes, whether wet or dry clutch or manual or traditional automatic. |
Originally Posted by anshumandun
(Post 4531036)
DQ250 has a wet clutch because each of its 2 clutches has multiple plates and to manage the heat and friction between plates, it has a separate oil circuit. DQ200 has a dry clutch because each of its clutch is single plate in a concentric configuration so there is no need for a separate oil circuit for any additional cooling/lubrication. |
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