Help With Major Issue!!!

BRD1234 · 06-19-2014, 06:14 PM

Can anyone help me out with this idling issue that is causing me to have limp mode active?

The bouncing only happens when I press the brake pedal. After that if I let off the brake the car starts to sputter and run bad.

I'm about to plug it in to inpa but I need more help. Thanks to whoever chimes in!

e92_enthusiast_1 · 06-19-2014, 06:48 PM

a) how long ago did this start?
b) is it consistent, every time you turn on the car?
c) what is the last major maintenance you did?
d) let us know what codes you can pull with INPA.

BRD1234 · 06-19-2014, 07:14 PM

Quote:

Originally Posted by e92_enthusiast_1

a) how long ago did this start?
b) is it consistent, every time you turn on the car?
c) what is the last major maintenance you did?
d) let us know what codes you can pull with INPA.

a) started 3 days ago when I attempted to install the jb4 pinout. install went fine. After install was in limp mode. since then i have uninstalled pinout and put it back to stock.
b) it's consistent for as long as i want to run the car which hasnt been long because i dont like running it in limp mode
c) last major maintenance was coolant flush (replaced my whole radiator) and an oil change im at 100k miles
d) trying to recover my old version of inpa that worked perfect (dad wiped the computer)
__________________

e92_enthusiast_1 · 06-19-2014, 07:29 PM

That has to be more than a coincidence. Unfortunately, I installed the COBB so I have no experience with JB4 (main reason i stayed away was i didnt want to mess with the DME).

WARNING - twisted JB4 DME cables can cause limp mode!

Maybe you just need to go back and double check the wires? Sorry man, GL. just throwing ideas out. Oh yeah, see what's up with reading the codes if you can and let us know.

Quote:

Originally Posted by BRD1234

a) started 3 days ago when I attempted to install the jb4 pinout. install went fine. After install was in limp mode. since then i have uninstalled pinout and put it back to stock.
....
d) trying to recover my old version of inpa that worked perfect (dad wiped the computer)
__________________

DJtoad · 06-19-2014, 07:43 PM

Quote:

Originally Posted by BRD1234

a) started 3 days ago when I attempted to install the jb4 pinout. install went fine. After install was in limp mode. since then i have uninstalled pinout and put it back to stock.

You should have mentioned that little detail in your original post. Chances are you either have a subconnector reversed, misaligned, or bent a pin. If you reversed a subconnector during the JB4 install and then went back to stock, that subconnector is probably still reversed.

N54Twin · 06-20-2014, 05:33 PM

Fix???

N54Twin · 06-20-2014, 05:50 PM

Quote:

Originally Posted by BRD1234

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Can anyone help me out with this idling issue that is causing me to have limp mode active?

The bouncing only happens when I press the brake pedal. After that if I let off the brake the car starts to sputter and run bad.

I'm about to plug it in to inpa but I need more help. Thanks to whoever chimes in!

I remove my airbox cause im waiting for new intake now if install the back car turns off after starting up and keeps rev when i start the car

BRD1234 · 06-21-2014, 10:16 AM

Quote:

Originally Posted by DJtoad

You should have mentioned that little detail in your original post. Chances are you either have a subconnector reversed, misaligned, or bent a pin. If you reversed a subconnector during the JB4 install and then went back to stock, that subconnector is probably still reversed.

you hit it right on the nail with the bent pin! I was taking everything apart to double check all of the wires being in their correct position and I noticed the pin was pushed down into the DME. Grabbed a pair of needle nose pliers, pulled the pin up, put it back together and it runs like a babe.

THANKS

GB-335xiCoupe · 06-21-2014, 10:25 AM

Damned pins!

TwinTuning · 06-21-2014, 10:31 AM

Good call on the damn pins.

e92_enthusiast_1 · 06-21-2014, 11:34 AM

Nice! Glad it's solved. So you put the jb4 back on now that you figured it out?

DJtoad · 06-21-2014, 12:09 PM

Quote:

Originally Posted by BRD1234

you hit it right on the nail with the bent pin! I was taking everything apart to double check all of the wires being in their correct position and I noticed the pin was pushed down into the DME. Grabbed a pair of needle nose pliers, pulled the pin up, put it back together and it runs like a babe.

THANKS

Glad to hear you got it fixed. Enjoy the JB4!

ThatRWD · 06-21-2014, 05:37 PM

Scared me.....

BRD1234 · 08-09-2014, 12:02 PM

Quote:

Originally Posted by e92_enthusiast_1

Nice! Glad it's solved. So you put the jb4 back on now that you figured it out?

JB4 is on now! and I have a set of spark plugs and I ordered coils to get that done with so I can really have some fun!

06-19-2014, 06:14 PM	#1
BRD1234 Second Lieutenant 18 Rep 283 Posts Drives: E92 335i Coupe Join Date: Apr 2013 Location: Miami, Fl iTrader: (0)	Help With Major Issue!!! Can anyone help me out with this idling issue that is causing me to have limp mode active? The bouncing only happens when I press the brake pedal. After that if I let off the brake the car starts to sputter and run bad. I'm about to plug it in to inpa but I need more help. Thanks to whoever chimes in! __________________ 335i Coupe 6MT Montego Blue
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06-19-2014, 06:48 PM	#2
e92_enthusiast_1 Lieutenant Colonel 35 Rep 1,652 Posts Drives: '10 AW/CR e92 6mt 335i Join Date: Mar 2012 Location: Chandler, AZ iTrader: (1) Garage List 2010 BMW 335i [0.00]	a) how long ago did this start? b) is it consistent, every time you turn on the car? c) what is the last major maintenance you did? d) let us know what codes you can pull with INPA. __________________ COBB AP Stg 2+ FMIC Aggressive \| VRSF 3" Catless DP \| COBB FMIC \| BMS DCI \| CP-e Metal Charge Pipe \| 370+ whp/435+ lb.ft torque
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06-20-2014, 05:33 PM	#6
N54Twin Major 413 Rep 1,362 Posts Drives: F85 Join Date: Jul 2013 Location: New Jersey iTrader: (9)	Fix??? __________________
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06-21-2014, 10:25 AM	#9
GB-335xiCoupe Libertarian 132 Rep 1,577 Posts Drives: 29k mi per year. Join Date: Sep 2013 Location: Green Bay area iTrader: (0)	Damned pins! __________________ 2011 335xi Coupe BSM (e92/N55/ZPP/ZCW, Alpina B3 Flash) Bought 08/09/2013@53,340mi Current 3/13/2019@206,283mi Fail(s): tstat hous/water pump 89k, Chargepipe 106k, coolant tank 114k, FRM3 114k Maint: Walnut blast 101k, Trans/T-case Fluid 103k, OFHG 195k
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06-21-2014, 10:31 AM	#10
TwinTuning Captain 19 Rep 712 Posts Drives: E90 335I Join Date: Aug 2011 Location: HERE iTrader: (7)	Good call on the damn pins.
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06-21-2014, 11:34 AM	#11
e92_enthusiast_1 Lieutenant Colonel 35 Rep 1,652 Posts Drives: '10 AW/CR e92 6mt 335i Join Date: Mar 2012 Location: Chandler, AZ iTrader: (1) Garage List 2010 BMW 335i [0.00]	Nice! Glad it's solved. So you put the jb4 back on now that you figured it out?
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06-21-2014, 05:37 PM	#13
ThatRWD Major 109 Rep 1,062 Posts Drives: 335i Join Date: Mar 2014 Location: Northern VA iTrader: (0)	Scared me.....
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