Very weird transmission squeak after xhp?

gabrmdoom · 07-19-2019, 04:02 AM

340i zf8 Mods
-Xhp flash
-Mhd flash
-dinan cf cold air intake
-vrsf catless dp
-bms billet wheel spacers
-approx 40k miles.
-if im missing anything lmk
New to the forums so take it easy, bub
Essentially i flashed it to medium burbles
Leave exhaust flap always open
Xhp flash straight to stage 3 (im stupid yes) .)
Any gear to any gear only in sport and sport plus i can hear a very weird squeak between gear changes. All i can get on videos is engine noise and exhaust sound. Very very bad sound that hurts my heart every time. Ik that the "lifetime" tranny fluid is recommended to be changed about now just curious if i fucked up my clutch and its slipping and if so what kind of bill am i looking at.

CrushJelly · 07-19-2019, 04:14 AM

Have you flashed the transmission back to stock?

gabrmdoom · 07-19-2019, 04:17 AM

Quote:

Originally Posted by Jahjaman

Have you flashed the transmission back to stock?

Yup. Same sound

BWbimmer · 07-19-2019, 07:55 AM

Are we talking about this kind of noise?

https://www.youtube.com/watch?v=xmWE...ature=youtu.be

gabrmdoom · 07-19-2019, 08:05 AM

Quote:

Originally Posted by BWbimmer

Are we talking about this kind of noise?

https://www.youtube.com/watch?v=xmWEg8hQZW8&feature=youtu.be

Precisely! Ive heard its normal for the zfh8p from some and bad things from others. My first thought was clutch slip!

awilki0101 · 07-19-2019, 09:29 AM

You're most likely hearing belt squeak. I had my belt and belt tensioner replaced under warranty and it went away for a couple months then came back. I just live with it now.

gabrmdoom · 07-19-2019, 11:21 AM

Quote:

Originally Posted by awilki0101

You're most likely hearing belt squeak. I had my belt and belt tensioner replaced under warranty and it went away for a couple months then came back. I just live with it now.

So no danger??

awilki0101 · 07-19-2019, 12:45 PM

Quote:

Originally Posted by gabrmdoom

Quote:

Originally Posted by awilki0101

You're most likely hearing belt squeak. I had my belt and belt tensioner replaced under warranty and it went away for a couple months then came back. I just live with it now.

So no danger??

No sir

J3Vr6 · 07-19-2019, 02:35 PM

I hear the same thing on occasion, usually when the engine is colder. Once its warmer, the sound goes away. But it does sound disconcerting at first. I read some threads that said this was normal, but I also read elsewhere that its a belt and can be bad. Never got an answer and the dealership never was able to replicate.

BWbimmer · 07-21-2019, 04:38 PM

Quote:

Originally Posted by awilki0101

No sir

It's an issue BMW could not fix yet. I has been regognized and invertigated on. It comes from the side with the aircon on. BMW tried to fix it with a diffente version of the aircon compressor with a different clutch and the with a different tentioner, then with a different belt. Everything helped... for a short time.

BWbimmer · 07-21-2019, 04:42 PM

Quote:

Originally Posted by J3Vr6

I hear the same thing on occasion, usually when the engine is colder. Once its warmer, the sound goes away. But it does sound disconcerting at first. I read some threads that said this was normal, but I also read elsewhere that its a belt and can be bad. Never got an answer and the dealership never was able to replicate.

I must be warm outside, the enine needs to be warm and the aircon must be working.

07-19-2019, 04:02 AM	#1
gabrmdoom Private First Class 34 Rep 151 Posts Drives: BMW 340i Join Date: Jun 2019 Location: Detroit, Michigan iTrader: (0)	Very weird transmission squeak after xhp? 340i zf8 Mods -Xhp flash -Mhd flash -dinan cf cold air intake -vrsf catless dp -bms billet wheel spacers -approx 40k miles. -if im missing anything lmk New to the forums so take it easy, bub Essentially i flashed it to medium burbles Leave exhaust flap always open Xhp flash straight to stage 3 (im stupid yes) .) Any gear to any gear only in sport and sport plus i can hear a very weird squeak between gear changes. All i can get on videos is engine noise and exhaust sound. Very very bad sound that hurts my heart every time. Ik that the "lifetime" tranny fluid is recommended to be changed about now just curious if i fucked up my clutch and its slipping and if so what kind of bill am i looking at. __________________ I bought this car like 2 years ago cuz of the supra hype. Someday itll be a 900 awhp beast. Maybe?
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07-19-2019, 04:14 AM	#2
CrushJelly Private First Class 102 Rep 128 Posts Drives: M140i Join Date: Dec 2016 Location: Australia iTrader: (0)	Have you flashed the transmission back to stock?
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07-19-2019, 07:55 AM	#4
BWbimmer Captain 277 Rep 833 Posts Drives: BMW F36, E36, E93 Join Date: Jul 2019 Location: Germany iTrader: (0) Garage List 08/2017 440i GC MPPSK [0.00]	Are we talking about this kind of noise? https://www.youtube.com/watch?v=xmWE...ature=youtu.be __________________ Such Fun If you finde any spelling mistakes in my posts you may keep them, no return required
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07-19-2019, 09:29 AM	#6
awilki0101 First Lieutenant 519 Rep 308 Posts Drives: 2016 340i xDrive Join Date: Oct 2017 Location: Woodlands Tx iTrader: (1)	You're most likely hearing belt squeak. I had my belt and belt tensioner replaced under warranty and it went away for a couple months then came back. I just live with it now.
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07-19-2019, 02:35 PM	#9
J3Vr6 Private 11 Rep 75 Posts Drives: 2016 BMW 340i (RWD) Join Date: Feb 2019 Location: Florida iTrader: (0)	I hear the same thing on occasion, usually when the engine is colder. Once its warmer, the sound goes away. But it does sound disconcerting at first. I read some threads that said this was normal, but I also read elsewhere that its a belt and can be bad. Never got an answer and the dealership never was able to replicate.
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