Hi gogo110,
I have the same problem with my car, an Audi A3 1.5 TSI with manual gearbox. I have noticed an irritating power drop when the car reaches 10 km/h and the clutch pedal isn’t fully released. For me it is a bug in the control system of the motor.
Here are some examples of tests I did:
- I rev the motor to 1700 rpm, lift the clutch pedal until the clutch starts to engage (slipping) and hold both the gas pedal and the clutch pedal at this position.
Result: The car makes a “nose dive” when the car reach 10 km/h (and it is not caused by the clutch because it is still not fully engaged.)
- I start the car without giving any gas and release the clutch pedal fully. Then I give gas.
Result: The car accelerates nicely and no power drop is noticed when the car reaches 10 km/h
-I do the same thing as the previous test, but I do not release the clutch pedal fully, just until the clutch is fully engaged, making sure that the gear indicator isn’t lit which it is if the clutch pedal is fully released. (I release the clutch pedal slowly making sure that the speed of the car doesn’t reach 10 km/h at any point.) I hold the clutch pedal at this point and give gas.
Result: The car makes a “nose dive” when the car reaches 10 km/h.
I have also logged the behavior of the throttle and you can clearly see that it closes when the car reaches 10 km/h. Why? I do not see the point. I would be happy to have an explanation why the ECU is programmed to do this at 10 km/h and only if the clutch pedal isn’t fully released.
Gogo110, do you also have the same behavior that can be linked to a specific speed at start?