another drivetrain malfuntion.. no boost

Drm5 · 11-17-2016, 05:35 AM

Hey guys need some help I will attach pic of some of the codes that are associated with the drivetrain malfuntion....
I can re-start the car and it won't go away.. and I got no boost.... I doesn't accelerate more than 3.5 rpms... any clues?

wheelpro · 11-17-2016, 05:48 AM

i use icom os for bmw , but your description fault mean error coding ,
you made any flash or prog ?
and did you check wiring for dme ,
please recode your dme after check your wiring and plug connection

allmotor_2000 · 11-17-2016, 08:47 AM

Unplug and reconnect the DME's

135Hoser · 11-17-2016, 10:22 PM

DTC 120408 might be the cause of your RPM limit and lack of boost.

I'd inspect your intake tubing. you may have blown a boot off.

Msizzle · 11-18-2016, 10:30 PM

whats done to the car??

Drm5 · 11-19-2016, 12:04 PM

well I guess they found some water inside the JB 4 box... so I will replace the board!!! thx u guy for the input... hopefully is just the JB4...
my car has
JB4
IPE EXHAUST
MSR intakes
ssp spec-x clutch
pure turbo stage 2
ESS FULL TUNE...
drive shaft and rear axle by DSS

allmotor_2000 · 11-19-2016, 06:16 PM

Glad it works - how is that driveshaft holding up?

Drm5 · 11-20-2016, 07:17 AM

very good... I am having problems with the trans. torque limiter.. if I drop gear in automatic on full throttle.. the trans closes the throttle to like 40% and progressively open up... this info was logged by my tuner... so I don't know what to do to improve this problems

ARC550 · 11-20-2016, 07:39 AM

Quote:

Originally Posted by Drm5

very good... I am having problems with the trans. torque limiter.. if I drop gear in automatic on full throttle.. the trans closes the throttle to like 40% and progressively open up... this info was logged by my tuner... so I don't know what to do to improve this problems

Having Same issue.. lol

allmotor_2000 · 11-20-2016, 08:50 AM

What do you mean drop a gear at WOT.... downshift?

How do you know it's the trans doing this - what are your torque limits? Is boost going over target

ARC550 · 11-20-2016, 01:35 PM

Quote:

Originally Posted by allmotor_2000

What do you mean drop a gear at WOT.... downshift?

How do you know it's the trans doing this - what are your torque limits? Is boost going over target

It's the common 5-7 Gear rod fault. It's very common in these cars modded/stock.
Car essentially overshoots from 4th to 6th gear and 5th goes missing lol

And if you have a severe case like ..me. You will get this along with drivetrain and codes lolZ we shall see what issue is this soon though

allmotor_2000 · 11-20-2016, 09:44 PM

Yes I know the issue very well - had it and changed my trans as a result. Didn't realize he was referring to that.

The rod 5-7 happens when redlining 4th and going into 5th in S3 mostly although mine got to a point it did it every time even with stock flash. SSP has the old trans and is helping figure it out.

ARC550 · 11-20-2016, 09:58 PM

Quote:

Originally Posted by allmotor_2000

Yes I know the issue very well - had it and changed my trans as a result. Didn't realize he was referring to that.

The rod 5-7 happens when redlining 4th and going into 5th in S3 mostly although mine got to a point it did it every time even with stock flash. SSP has the old trans and is helping figure it out.

I am in that boat ahhahahaa

allmotor_2000 · 11-20-2016, 10:43 PM

It will happen to everyone with a tune eventually - maybe even stock cars if driven aggressively!

ARC550 · 11-20-2016, 11:35 PM

Quote:

Originally Posted by allmotor_2000

It will happen to everyone with a tune eventually - maybe even stock cars if driven aggressively!

Can't wait for solution.. and worst case 2018 M5 ahhahahaha Hahahah

schnell1982 · 11-21-2016, 08:28 PM

Quote:

Originally Posted by Drm5

Hey guys need some help I will attach pic of some of the codes that are associated with the drivetrain malfuntion....
I can re-start the car and it won't go away.. and I got no boost.... I doesn't accelerate more than 3.5 rpms... any clues?

After you repair your BMS JB4 board if the Pressure Sensor fault codes return, there is a test you can do to see if 1 of your 4 pressure sensors are at fault.
These are failing on stock and modified cars.
2 intercooler sensors and 2 sensors in the intake manifold. They give the same fault description that you are getting : Charging Pressure

m5james · 11-22-2016, 08:17 PM

What's the test for them?

Drm5 · 11-23-2016, 08:49 AM

how do u do the test?... I will keep u posted of the end results...

11-17-2016, 05:35 AM	#1
Drm5 Private First Class 30 Rep 182 Posts Drives: F10 M5 sakhir orange Join Date: Jan 2013 Location: Puerto rico iTrader: (0)	another drivetrain malfuntion.. no boost Hey guys need some help I will attach pic of some of the codes that are associated with the drivetrain malfuntion.... I can re-start the car and it won't go away.. and I got no boost.... I doesn't accelerate more than 3.5 rpms... any clues? Attached Images
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11-17-2016, 05:48 AM	#2
wheelpro Lieutenant 175 Rep 594 Posts Drives: M5,F10,JB4,DP,CP,METH,SSP Join Date: Sep 2012 Location: CAIRO iTrader: (0)	i use icom os for bmw , but your description fault mean error coding , you made any flash or prog ? and did you check wiring for dme , please recode your dme after check your wiring and plug connection Last edited by wheelpro; 11-17-2016 at 09:05 AM..
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11-17-2016, 08:47 AM	#3
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	Unplug and reconnect the DME's
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11-17-2016, 10:22 PM	#4
135Hoser Banned 39 Rep 315 Posts Drives: '16 m4 zcp Join Date: Jul 2011 Location: Canada, Eh iTrader: (0)	DTC 120408 might be the cause of your RPM limit and lack of boost. I'd inspect your intake tubing. you may have blown a boot off.
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11-18-2016, 10:30 PM	#5
Msizzle Lieutenant 165 Rep 402 Posts Drives: 2013 M6 Coupe Join Date: Mar 2015 Location: Long Island, NY iTrader: (0)	whats done to the car??
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11-19-2016, 12:04 PM	#6
Drm5 Private First Class 30 Rep 182 Posts Drives: F10 M5 sakhir orange Join Date: Jan 2013 Location: Puerto rico iTrader: (0)	well I guess they found some water inside the JB 4 box... so I will replace the board!!! thx u guy for the input... hopefully is just the JB4... my car has JB4 IPE EXHAUST MSR intakes ssp spec-x clutch pure turbo stage 2 ESS FULL TUNE... drive shaft and rear axle by DSS
	Appreciate 0 Quote

11-19-2016, 06:16 PM	#7
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	Glad it works - how is that driveshaft holding up?
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11-20-2016, 07:17 AM	#8
Drm5 Private First Class 30 Rep 182 Posts Drives: F10 M5 sakhir orange Join Date: Jan 2013 Location: Puerto rico iTrader: (0)	very good... I am having problems with the trans. torque limiter.. if I drop gear in automatic on full throttle.. the trans closes the throttle to like 40% and progressively open up... this info was logged by my tuner... so I don't know what to do to improve this problems
	Appreciate 0 Quote

11-20-2016, 08:50 AM	#10
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	What do you mean drop a gear at WOT.... downshift? How do you know it's the trans doing this - what are your torque limits? Is boost going over target
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11-20-2016, 09:44 PM	#12
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	Yes I know the issue very well - had it and changed my trans as a result. Didn't realize he was referring to that. The rod 5-7 happens when redlining 4th and going into 5th in S3 mostly although mine got to a point it did it every time even with stock flash. SSP has the old trans and is helping figure it out.
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11-20-2016, 10:43 PM	#14
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	It will happen to everyone with a tune eventually - maybe even stock cars if driven aggressively!
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11-22-2016, 08:17 PM	#17
m5james Colonel 431 Rep 2,062 Posts Drives: '10 X5M Alpine White on Sakhir Join Date: Aug 2015 Location: Marysville, WA iTrader: (0)	What's the test for them?
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11-23-2016, 08:49 AM	#18
Drm5 Private First Class 30 Rep 182 Posts Drives: F10 M5 sakhir orange Join Date: Jan 2013 Location: Puerto rico iTrader: (0)	how do u do the test?... I will keep u posted of the end results...
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