Automatic Transmission Flare

Boostedphil698 · 07-28-2020, 05:36 PM

Hey everyone, I've noticed every now and then my ZF8 has a flare where the tack raises just before shifting. I'm not sure if I hit the gas while the shift was taking place and it happened by accident but I wanted to know if anyone else experienced this.

F32Fleet · 07-28-2020, 06:02 PM

Quote:

Originally Posted by 435i_Phil

Hey everyone, I've noticed every now and then my ZF8 has a flare where the tack raises just before shifting. I'm not sure if I hit the gas while the shift was taking place and it happened by accident but I wanted to know if anyone else experienced this.

Never experienced this. 50k miles or more you could change the ATF OR at least check for leaks.

thejeremyman9 · 07-28-2020, 06:06 PM

Quote:

Originally Posted by 435i_Phil

Hey everyone, I've noticed every now and then my ZF8 has a flare where the tack raises just before shifting. I'm not sure if I hit the gas while the shift was taking place and it happened by accident but I wanted to know if anyone else experienced this.

How much raise are you talking about? The only thing somewhat similar is the rpm raise/hang for a split second on the notorious 1-2 'lurch' first cold shift that happens sometimes.

Also, are you XHP tuned and has that made any difference on the occurrence?

Boostedphil698 · 07-29-2020, 06:44 AM

Quote:

Originally Posted by thejeremyman9

Quote:

Originally Posted by 435i_Phil

Hey everyone, I've noticed every now and then my ZF8 has a flare where the tack raises just before shifting. I'm not sure if I hit the gas while the shift was taking place and it happened by accident but I wanted to know if anyone else experienced this.

How much raise are you talking about? The only thing somewhat similar is the rpm raise/hang for a split second on the notorious 1-2 'lurch' first cold shift that happens sometimes.

Also, are you XHP tuned and has that made any difference on the occurrence?

I'm completely stock at 35000 miles. I'm thinking about calling the dealer. I'm also still under warranty. It happens when the car shifts from like 6 to 7 I think, but has only done it 3 or 4 times.

thejeremyman9 · 07-29-2020, 11:25 AM

Quote:

Originally Posted by 435i_Phil

I'm completely stock at 35000 miles. I'm thinking about calling the dealer. I'm also still under warranty. It happens when the car shifts from like 6 to 7 I think, but has only done it 3 or 4 times.

If its a very rare and hard to reproduce problem, i recommend getting a video or other documentation of the problem before going in. Otherwise, they might make you pay a diagnostic fee and find nothing.

Boostedphil698 · 07-29-2020, 12:25 PM

Quote:

Originally Posted by thejeremyman9

Quote:

Originally Posted by 435i_Phil

I'm completely stock at 35000 miles. I'm thinking about calling the dealer. I'm also still under warranty. It happens when the car shifts from like 6 to 7 I think, but has only done it 3 or 4 times.

If its a very rare and hard to reproduce problem, i recommend getting a video or other documentation of the problem before going in. Otherwise, they might make you pay a diagnostic fee and find nothing.

The transmission in my opinion and I told the woman on the phone does not shift well gears 1-3 and on deceleration it's quite jarring. Maybe its just be you never know.

Boostedphil698 · 07-31-2020, 12:57 PM

Transmission needed a software update.

Eschmacher · 07-31-2020, 04:17 PM

I figured that might be the case, when I first bought my F30 my transmission didn't shift well in those gears either. Dealer did a software upgrade and it was fixed.

Boostedphil698 · 07-31-2020, 08:37 PM

Quote:

Originally Posted by Eschmacher

I figured that might be the case, when I first bought my F30 my transmission didn't shift well in those gears either. Dealer did a software upgrade and it was fixed.

The gears are much smoother.

Eschmacher · 08-01-2020, 09:43 AM

Consider XHP for further enhancements

07-28-2020, 05:36 PM	#1
Boostedphil698 Major 436 Rep 1,119 Posts Drives: 2015 BMW 435i Xdrive MSport Join Date: Mar 2020 Location: Greater Philadelphia iTrader: (0) Garage List 2015 BMW 435XI [0.00] 2009 Honda Civic [0.00]	Automatic Transmission Flare Hey everyone, I've noticed every now and then my ZF8 has a flare where the tack raises just before shifting. I'm not sure if I hit the gas while the shift was taking place and it happened by accident but I wanted to know if anyone else experienced this. __________________ 2015 435i Xdrive (Klaus) Stanced 8th Gen Honda Civic (The daily)
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07-31-2020, 12:57 PM	#7
Boostedphil698 Major 436 Rep 1,119 Posts Drives: 2015 BMW 435i Xdrive MSport Join Date: Mar 2020 Location: Greater Philadelphia iTrader: (0) Garage List 2015 BMW 435XI [0.00] 2009 Honda Civic [0.00]	Transmission needed a software update. __________________ 2015 435i Xdrive (Klaus) Stanced 8th Gen Honda Civic (The daily)
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07-31-2020, 04:17 PM	#8
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	I figured that might be the case, when I first bought my F30 my transmission didn't shift well in those gears either. Dealer did a software upgrade and it was fixed.
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08-01-2020, 09:43 AM	#10
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	Consider XHP for further enhancements __________________ Power mods: VRSF IC/Catted DP - FTP CP/BP - AFE Cat-back - BM3/XHP - Dorch S2 Handling mods: Koni yellow - Eibach prokit - Millway street - M Performance LSD - M3 brakes - EBC bluestuff Exterior: Euro LCI tail lights - Shitty ECS CF spoiler - Chinese M performance diffuser Interior: Bavsound stage 1 and subs - custom trunk sub by Mike1327
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