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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > Vibration 320d Automatic at idle (Torque converter?)
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      10-16-2019, 06:14 AM   #1
manitaci
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Vibration 320d Automatic at idle (Torque converter?)

Hi,

since a week I have the next problem with my 2013 320d 8-automatic (GA8HP45Z).

There is a vibration when the car is stationary, gear in D (Drive) and foot on the brakes (e.g. waiting at a trafic light)
It goes away when I put gear in N (Neutral) or P (Park).
Vibration seems a little bit less when I manual shift to gear 3.

Before the vibration started, there was allready not a smooth stop. Also there was more torque on the drive when stopped at traffic light. Like if NIC (Neutral Idle Control) and SST (Soft Stop) didn't work. I checked with Esys, and NIC seems Aktic in EGS module.
When put in Park, there is a thump. It sure is not smooth.

- Could this be a bad working torque converter?
- I have read something about converter clutch lockup. Is this something that can cause this?
- Car is remapped by previous owner (163hp to 230hp). Could it be it changed something in transmission as some prefer "the car be to ready for a sprint, without delay of NIC".
- When stationary in D, foot on brake. Is it possible the driveshaft is vibrating?

Hope to get more info from you guys!
tank you
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      10-16-2019, 06:19 AM   #2
Apples12
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Do you get the vibration worse when you put it in reverse but hold the car on handbrake or foot brake?
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      10-20-2019, 09:36 AM   #3
manitaci
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After some research. It happens in R and in N(eutral) with handbrakes activated.
I contacted to previous owner, he thinks it started AFTER the remap (tuning).

Could it be the NIC and SoftStop is deactivated?
And if so, is it possible te activate via ISTA/P?

I can't find status for NIC in EGS module.

it is also called Standstill decoupling (Rheingold)

note: status converter lockup is available, but this seems something different and is not causing the problem.

Last edited by manitaci; 10-20-2019 at 09:57 AM..
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      10-20-2019, 10:32 AM   #4
kdog_x
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I actually just troubleshooted the same issue. In drive at a light the car would rattle like crazy. Put it in park and it was gone. I left the car in drive and locked it with the parking brake and popped the hood, turned out my catch can had vibrated it's bolts loose. You may want to inspect for anything loose under the hood, these cars vibrate quite a bit, especially stopped while in gear.
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