1st & 2nd gear dragging

Panda340i · 05-25-2019, 08:38 AM

When letting of the gas and let the car coast until it reaches the speed to downshift to 2nd, the car suddenly slows down and it feel like it's dragging.

To check if the dragging coming from the brakes, I put it on N while slowing down and it was smooth and the dragging effect didn't happen.

I know it's not just the normal "engine braking" cause I've already drove another 340i

Any idea to look for?

track.n.trail · 05-26-2019, 10:42 PM

This "dragging" feeling is different from the automatic downshift from 3rd to 2nd or 2nd to 1st when you reach the minimum speed threshold for a given gear?

Panda340i · 05-27-2019, 09:39 AM

Quote:

Originally Posted by dotfiles

This "dragging" feeling is different from the automatic downshift from 3rd to 2nd or 2nd to 1st when you reach the minimum speed threshold for a given gear?

The dragging is felt when the car downshifts from 3rd to 2nd & 2nd to 1st
And also that same feeling is also felt when upshifting from 1st to 2nd & 2nd to 3rd

The "engine braking" in (1st & 2nd) is too much to handle

Automatic transmission

Panda340i · 05-27-2019, 10:58 PM

Bump

Panda340i · 05-29-2019, 01:33 PM

Bump

VVlasy · 05-29-2019, 05:23 PM

I will tell you one fact, going to the dealer is pointless, they will disregard this as normal. Rather try to find a ZF transmission service shop...

Panda340i · 05-29-2019, 05:33 PM

Quote:

Originally Posted by VVlasy

I will tell you one fact, going to the dealer is pointless, they will disregard this as normal. Rather try to find a ZF transmission service shop...

True, the dealer said it's normal numerous times
It's driving me nuts

VVlasy · 05-29-2019, 07:49 PM

I have a jerking issue with the trans, I want to take it to ZF shop. As I looked like an idiot trying to show them and convince them... Other people feel it and even asked about it if it broken...

J3Vr6 · 05-29-2019, 08:20 PM

Quote:

Originally Posted by Panda340i

When letting of the gas and let the car coast until it reaches the speed to downshift to 2nd, the car suddenly slows down and it feel like it's dragging.

To check if the dragging coming from the brakes, I put it on N while slowing down and it was smooth and the dragging effect didn't happen.

I know it's not just the normal "engine braking" cause I've already drove another 340i

Any idea to look for?

It sounds like engine braking to me, to be honest. Has this been happening since the BM3 tune? I know when I went JB4, the increased torque caused my engine braking to be much more pronounced.

Panda340i · 06-02-2019, 02:03 AM

Quote:

Originally Posted by VVlasy

I have a jerking issue with the trans, I want to take it to ZF shop. As I looked like an idiot trying to show them and convince them... Other people feel it and even asked about it if it broken...

Same man

Panda340i · 06-02-2019, 02:05 AM

Quote:

Originally Posted by J3Vr6

Quote:

Originally Posted by Panda340i

When letting of the gas and let the car coast until it reaches the speed to downshift to 2nd, the car suddenly slows down and it feel like it's dragging.

To check if the dragging coming from the brakes, I put it on N while slowing down and it was smooth and the dragging effect didn't happen.

I know it's not just the normal "engine braking" cause I've already drove another 340i

Any idea to look for?

It sounds like engine braking to me, to be honest. Has this been happening since the BM3 tune? I know when I went JB4, the increased torque caused my engine braking to be much more pronounced.

Excessive engine braking, I shouldn't be like that.

The car has no tune

track.n.trail · 06-03-2019, 01:54 PM

Quote:

Originally Posted by Panda340i

Excessive engine braking, I shouldn't be like that.

The car has no tune

Post a video

Wires · 06-04-2019, 06:50 PM

Do the transmission adaptation reset. If you drive like a dork (BM3 amplifies this, I know!) then the shift pressures increase and so does the engine braking. Mine starts to gain a really harsh 5->4 shift if I'm aggressive on the throttle.

Panda340i · 06-04-2019, 07:21 PM

Quote:

Originally Posted by Wires

Do the transmission adaptation reset. If you drive like a dork (BM3 amplifies this, I know!) then the shift pressures increase and so does the engine braking. Mine starts to gain a really harsh 5->4 shift if I'm aggressive on the throttle.

But I'm completely stock, the dealer also did the transmission reset with no results

Wires · 06-05-2019, 06:45 PM

Happens stock as well. You might just have different TCU firmware that keeps the torque converter locked different than the car you drove.

Panda340i · 06-05-2019, 07:38 PM

Quote:

Originally Posted by Wires

Happens stock as well. You might just have different TCU firmware that keeps the torque converter locked different than the car you drove.

What is the TCU?
Does different software for the module can fix the issue?

Wires · 06-06-2019, 07:27 PM

Transmission Control Unit. Maybe yes, maybe no.

If it's not broken, why worry about "fixing" it? You are just getting more engine braking in low gears which is a nice thing when driving.

Panda340i · 06-06-2019, 10:24 PM

Quote:

Originally Posted by Wires

Transmission Control Unit. Maybe yes, maybe no.

If it's not broken, why worry about "fixing" it? You are just getting more engine braking in low gears which is a nice thing when driving.

It's driving me crazy driving in traffic
All gears feel like coating when letting off throttle except 1st & 2nd gear

GT500R · 06-07-2019, 06:54 AM

So neutral is coasty coasty .. is it drive or is it Sport+ (shifted to the left) where it does it?

Panda340i · 06-07-2019, 07:03 AM

Quote:

Originally Posted by GT500R

So neutral is coasty coasty .. is it drive or is it Sport+ (shifted to the left) where it does it?

In every driving mode, even eco pro.
It feels like something lock up and slow the car immediately

GT500R · 06-07-2019, 04:26 PM

And you drove another 340 and felt the same?

Panda340i · 06-07-2019, 05:06 PM

Quote:

Originally Posted by GT500R

And you drove another 340 and felt the same?

Yes, it doesn't feel like my car.
It coasts in 1st & 2nd gear

05-25-2019, 08:38 AM	#1
Panda340i Private 16 Rep 63 Posts Drives: 340i Join Date: Nov 2017 Location: USA iTrader: (0)	1st & 2nd gear dragging When letting of the gas and let the car coast until it reaches the speed to downshift to 2nd, the car suddenly slows down and it feel like it's dragging. To check if the dragging coming from the brakes, I put it on N while slowing down and it was smooth and the dragging effect didn't happen. I know it's not just the normal "engine braking" cause I've already drove another 340i Any idea to look for?
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05-26-2019, 10:42 PM	#2
track.n.trail Private First Class 62 Rep 132 Posts Drives: OG M2 Join Date: Jan 2019 Location: San Francisco, CA iTrader: (0) Garage List 2016 BMW 340i [0.00]	This "dragging" feeling is different from the automatic downshift from 3rd to 2nd or 2nd to 1st when you reach the minimum speed threshold for a given gear? __________________ M2 - TC Kline DA Coilovers - Apex SM-10s - 265 RS-4s - Dinan Intake - BM3 - CSF Intercooler - VRSF CP Previous: 6th Gen Camaro SS 1LE \| 2020 JLUR Wrangler \| F30 340i \| B7 Audi A4 APR Tuned \| E46 330ci Instagram @track.n.trail
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05-27-2019, 10:58 PM	#4
Panda340i Private 16 Rep 63 Posts Drives: 340i Join Date: Nov 2017 Location: USA iTrader: (0)	Bump
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05-29-2019, 01:33 PM	#5
Panda340i Private 16 Rep 63 Posts Drives: 340i Join Date: Nov 2017 Location: USA iTrader: (0)	Bump
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05-29-2019, 05:23 PM	#6
VVlasy Private First Class 48 Rep 130 Posts Drives: 2016 440i xDrive GC with MPPSK Join Date: Sep 2016 Location: Prague iTrader: (0)	I will tell you one fact, going to the dealer is pointless, they will disregard this as normal. Rather try to find a ZF transmission service shop...
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05-29-2019, 07:49 PM	#8
VVlasy Private First Class 48 Rep 130 Posts Drives: 2016 440i xDrive GC with MPPSK Join Date: Sep 2016 Location: Prague iTrader: (0)	I have a jerking issue with the trans, I want to take it to ZF shop. As I looked like an idiot trying to show them and convince them... Other people feel it and even asked about it if it broken...
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06-04-2019, 06:50 PM	#13
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	Do the transmission adaptation reset. If you drive like a dork (BM3 amplifies this, I know!) then the shift pressures increase and so does the engine braking. Mine starts to gain a really harsh 5->4 shift if I'm aggressive on the throttle.
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06-05-2019, 06:45 PM	#15
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	Happens stock as well. You might just have different TCU firmware that keeps the torque converter locked different than the car you drove.
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06-06-2019, 07:27 PM	#17
Wires Brigadier General 1646 Rep 4,877 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	Transmission Control Unit. Maybe yes, maybe no. If it's not broken, why worry about "fixing" it? You are just getting more engine braking in low gears which is a nice thing when driving.
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06-07-2019, 06:54 AM	#19
GT500R Major 800 Rep 1,219 Posts Drives: BMW X3M Join Date: May 2018 Location: NE iTrader: (0)	So neutral is coasty coasty .. is it drive or is it Sport+ (shifted to the left) where it does it?
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06-07-2019, 04:26 PM	#21
GT500R Major 800 Rep 1,219 Posts Drives: BMW X3M Join Date: May 2018 Location: NE iTrader: (0)	And you drove another 340 and felt the same?
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