Hello from Romania!
Nice to meet you guys!
I am writing this message to tell my story and ask for an idea, maybe I am able to fix the problem that I am currently encountering.
I own a 2015 Golf MK7R with an 2017 Audi RS3 DQ500 gearbox - facelift RS3 400.
I am running the gearbox for well over 14.000 km now, but one issue still bothers me, and I cannot find the cause of it.
Initially, when I have installed the gearbox on the car, the car would drive away from a standstill at 1500 RPMs in D - Drive mode, and at 1900 RPMs in S - Sport mode. This setting was corrected when I installed the TVS DQ500 Golf 7R RS3 software.
However, not the car engages 1st gear at the correct RPMs, however, I believe that it is engaging 2nd and 3rd still at 1500 RPMs. I am not sure about this, and nor is it so important, BUT, every time you come to a stop, or you take your foot off the accelerator pedal, when the car comes from D3 to D2, around 15 km per hour, car stars COASTING.
First of all, the RPM needle starts bouncing, up, down, up, down, and then remains down.
So, the gearbox engages, disengages, and starts coasting the car, and it will not engage again until you put your foot on the accelerator pedal.
This behavior has been noticed since first moment i installed the gearbox on the car, and it did it using the Audi standard software, and still does it using the TVS software.
The guys from TVS confirmed that this is the first time they see this problem and they do NOT have encountered this problem before on any other conversion.
Now, the funny problem is, i found a car with the same behavior, which is a BRAND NEW car. Seat Tarraco, 2019, Diesel, running DQ500 gearbox, with excessive clutch slipping, and which disengages also.
I have attached some clips here, in order to get a better understanding of what I am on about:
In this clip at
0:34 -> you can see the gearbox comes from D3 to D2, and then the needle bounces, and D2 is disengaged, and remains disengaged until I touch the accelerator again
https://1drv.ms/v/s!Aprt18UeTPmJg75cKVEGAmwD0QdJWw
In this clip from
0:15 you can notice excessive slippage of the clutch car WAS IN GEAR, in S2 at all times speed was not rising.
https://1drv.ms/v/s!Aprt18UeTPmJg74coSjKjwZBsO7p9w
The problem with the Tarraco was similar with mine:
if the foot was on the accelerator pedal, car would drive normally. But the foot needed to be on the gas pedal for more than 2-3 seconds.
In the clip, I was giving 1 second inputs on the gas pedal, therefore the car was slipping the clutch.
Any ideas that could help me fix this problem, would be greatly appreciated.
You would actually be my hero!
Maybe i did something wrong with the DQ500 electrical conversion?
But I believe i did not, since i do not have any error codes on the gearbox, nor do I have communication issues with the gearbox.
Thank you!