N55 / DCT with A/C on issue (videos)

[MarkR171]

When I drive without traffic and am able to maintain some speed between stop lights, the car is flawless. No jerking, no revving, etc.

When I'm forced to drive slowly like in traffic or around a parking lot, I get problems.

Does that help with diagnosis?

[GMWNashville]

honestly never had this complaint-i can tell you theres no SIBs currently about the issue...

[woner]

Originally Posted by MarkR171

When I drive without traffic and am able to maintain some speed between stop lights, the car is flawless. No jerking, no revving, etc.

When I'm forced to drive slowly like in traffic or around a parking lot, I get problems.

Does that help with diagnosis?

I definitely have the same problems as you. I thought they went away this summer but they've resurfaced this week. I'm having bad transmission lag from a roll/stop, revs dropping down low enough to almost stall, and some high revs during low speed situations. I just had the revs bounce up a couple times to over 1,500 after putting the car in reverse. The car has stalled on me twice since I've had it.

[Ganque]

Originally Posted by MarkR171

When I drive without traffic and am able to maintain some speed between stop lights, the car is flawless. No jerking, no revving, etc.

When I'm forced to drive slowly like in traffic or around a parking lot, I get problems.

Does that help with diagnosis?

Did you ever figured out the issue?

[Havocsteve]

http://www.1addicts.com/forums/showthread.php?t=675318

Read up on this. I updated my ECU software and it has helped with the situation. Mine stalled on the highway with traffic.

[Ganque]

Originally Posted by Havocsteve

http://www.1addicts.com/forums/showthread.php?t=675318

Read up on this. I updated my ECU software and it has helped with the situation. Mine stalled on the highway with traffic.

I've already responded on that post with this:

I've been having the same problem with my car almost since I bought it.

Car: 2013 135i N55 with DCT (no PPK)

Symptoms:
- Engine Stuttering
- Jerkiness Stalling with A/C
- Car jumps forward when coming to a stop... it kinda feels like when doing a "heel-toe" downshift from 2nd gear to 1st gear including a knock noise from the engine fighting to keep it running on very low RPMs.
- The car started to have these issues since stock at around 8000 miles.

Current mods on my car:
- JB4 with ISO mod and JB4 connect kit
- BMS Intake
- Helix FMIC
- Megan Racing Downpipe
- Mid resonator deleted
- COBB Chargepipe

Actions already taken to attempt to fix the issue:
- Took the car to the dealer for a software update (Mentioned the SIB 12 15 14)...... Didn't fix it
- Did a DCT adaptations reset via Tool32 on a K+DCAN cable.... Didn't fix it
- Did a Throttle Adaptations reset (regular pedal procedure)...... Didn't fix it
- Updated my JB4 firmware to the latest version and switched to Map 5.... Didn't fix it
- Regular oil change on the N55 engine.... Didn't fix it
- Scanned the car for old codes... No codes saved



I'm lost now guys, Every single thread on any forum suggest to bring the car to the dealership and mention the SIB 12 15 14... but this DID NOT fix my issue. Summer is coming and hot weather is increasing... A/C must be turned on almost all the time.
The car feels awful when coming to a stop and jumps forward like it's about to launch hard...
One notorius symptoms is that the car does this only when the DCT and N55 engine achieve the regular temperature conditions. It does not do it on cold transmission temps.

PLEASE HELP!


So in summary, the DME update did not fix my issue...

[Ganque]

In case any of you guys are still having this problem. Here's the solution:
http://www.1addicts.com/forums/showthread.php?t=1270101