*HELP* Half Engine Light pops up after becoming FBO

barton2002 · 07-09-2012, 01:09 PM

**UPDATE AT PAGE 1, #16**

Hey Guys,

Firstly, let know state my latest mods here:
PSS10, JB4, CP-e DP, ETS FMIC, BMS DCI, BMC OCC and RB's Intake Valve.

I just finished installing all the Mods tonight and surely, what else could be more enjoyable to go out and enjoy the extra power my car got. First off the car got louder, no drone or rasp. Pulling strong and feels great overall, however, after driving for 30 mins or so, having let it settled, i went WOT, then not long after this, the half engine light popped up.

Is this limp mode? or what caused it? I had this before when i went WOT when I only had JB4 and DCI. I thought my lack of performance mod and pushing it too hard caused that. But now, that doesnt seem like it is the case.

Therefore, I am anxious to figure out what causes it that almost everytime i go WOT, I get this light comes on. (Altho i dont flat the gas too often).

Please help me with this and give me some advice!

(Its a 07 335i msport)

Thanks and much appreciated.

B

Gugs · 07-09-2012, 01:29 PM

We can't diagnose or help anything without you reading the codes that were produced when the cel light appeared. Pull the codes from the jb4 and report back.

barton2002 · 07-09-2012, 01:33 PM

Quote:

Originally Posted by Gugs

We can't diagnose or help anything without you reading the codes that were produced when the cel light appeared. Pull the codes from the jb4 and report back.

Sorry, i have never done that before (how exactly do you do it?). Will the code still be there because the half engine light is gone after re-starting my car.

idrift4wd · 07-09-2012, 01:37 PM

could be anything man, mis-fire? fuel pump? vanos? change your coil, plugs, injectors.

rader1 · 07-09-2012, 01:43 PM

Quote:

Originally Posted by idrift4wd

could be anything man, mis-fire? fuel pump? vanos? change your coil, plugs, injectors.

Misfires shouldn't trigger a limp mode.

My guess is boost leak but that's just a wild guess without codes.

idrift4wd · 07-09-2012, 01:45 PM

Quote:

Originally Posted by rader1

Misfires shouldn't trigger a limp mode.

My guess is boost leak but that's just a wild guess without codes.

ive gotten limp mode from mis-fires. it was so bad that i can replicate it everytime going wot in 3rd and would get limp mode.

GeorgiaTech335coupe · 07-09-2012, 01:46 PM

Provide codes. And provide more information on exactly what happens/what you feel prior to the car going limp.

^misfires will cause limp mode if they are bad enough while WOT.

sammy_0559 · 07-09-2012, 01:52 PM

they the could possibly be vanos, injectors or coils.

i do get into limp mode at WOT with all these codes

rader1 · 07-09-2012, 01:57 PM

Quote:

Originally Posted by idrift4wd

ive gotten limp mode from mis-fires. it was so bad that i can replicate it everytime going wot in 3rd and would get limp mode.

Hmm I used to get misfires before changing plugs and I would get the SES light but I never got a limp mode. Mine just may not have been severe enough.

tofu- · 07-09-2012, 02:14 PM

car probably needs a new engine. likely has suspension damage as well.

likely will cost upwards of 5 figures (USD) to repair.

sorry for your loss.

wren57 · 07-09-2012, 02:19 PM

As has been said already, pull the codes and report back.

In the future, add one mod at a time. That way if something creates a malfunction it will be easier to diagnose.

themyst · 07-09-2012, 02:20 PM

idrift4wd · 07-09-2012, 02:35 PM

Quote:

Originally Posted by rader1

Hmm I used to get misfires before changing plugs and I would get the SES light but I never got a limp mode. Mine just may not have been severe enough.

you know what.... i think your right. i think it was a service engine soon light. but i def didnt have power. i really want to say i saw the half engine sign every time it happen though and the SES light would stay lit.

marcvtec · 07-09-2012, 04:25 PM

Misplaced o2 sensors ? Pull the code

pettway69 · 07-10-2012, 01:06 AM

Had similar problem, turned out to be the vacuum tanks were cracked

barton2002 · 07-10-2012, 04:47 AM

Guys!

Code has been identified as follows:
3100 low boost mode engaged - CEL Displayed
2A87 Outlet-Vanous variable cam control test, mechanics.

So these are the codes, it popped up again instantly when I floored it.

What should I do it. Advice appreciated. Thanks

enrita · 07-10-2012, 05:06 AM

Quote:

Originally Posted by barton2002

Guys!

Code has been identified as follows:
3100 low boost mode engaged - CEL Displayed
2A87 Outlet-Vanous variable cam control test, mechanics.

So these are the codes, it popped up again instantly when I floored it.

What should I do it. Advice appreciated. Thanks

http://www.e90post.com/forums/search...rchid=22826175

barton2002 · 07-10-2012, 05:19 AM

So do changing the solenoids should do the job right?

enrita · 07-10-2012, 05:40 AM

Quote:

Originally Posted by barton2002

So do changing the solenoids should do the job right?

you can try to clean them first but honestly i would just replace them completely, not that expensive.

07-09-2012, 01:09 PM	#1
barton2002 Second Lieutenant 33 Rep 271 Posts Drives: E92 ZCP M3 Frozen Grey Join Date: Feb 2010 Location: Bath & Hong Kong iTrader: (0)	HELP Half Engine Light pops up after becoming FBO UPDATE AT PAGE 1, #16 Hey Guys, Firstly, let know state my latest mods here: PSS10, JB4, CP-e DP, ETS FMIC, BMS DCI, BMC OCC and RB's Intake Valve. I just finished installing all the Mods tonight and surely, what else could be more enjoyable to go out and enjoy the extra power my car got. First off the car got louder, no drone or rasp. Pulling strong and feels great overall, however, after driving for 30 mins or so, having let it settled, i went WOT, then not long after this, the half engine light popped up. Is this limp mode? or what caused it? I had this before when i went WOT when I only had JB4 and DCI. I thought my lack of performance mod and pushing it too hard caused that. But now, that doesnt seem like it is the case. Therefore, I am anxious to figure out what causes it that almost everytime i go WOT, I get this light comes on. (Altho i dont flat the gas too often). Please help me with this and give me some advice! (Its a 07 335i msport) Thanks and much appreciated. B Last edited by barton2002; 07-10-2012 at 04:48 AM..
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07-09-2012, 01:29 PM	#2
Gugs Banned 31 Rep 457 Posts Drives: E92 JetBlack Join Date: Jul 2012 Location: Long island iTrader: (1)	We can't diagnose or help anything without you reading the codes that were produced when the cel light appeared. Pull the codes from the jb4 and report back.
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07-09-2012, 01:37 PM	#4
idrift4wd Brigadier General 151 Rep 3,549 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	could be anything man, mis-fire? fuel pump? vanos? change your coil, plugs, injectors.
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07-09-2012, 01:46 PM	#7
GeorgiaTech335coupe Lieutenant Colonel 81 Rep 1,883 Posts Drives: Black BMW 335i coupe Join Date: Mar 2007 Location: USA iTrader: (0)	Provide codes. And provide more information on exactly what happens/what you feel prior to the car going limp. ^misfires will cause limp mode if they are bad enough while WOT. __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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07-09-2012, 01:52 PM	#8
sammy_0559 Lieutenant Colonel 206 Rep 1,950 Posts Drives: 335i Join Date: Apr 2011 Location: FortWorth, Texas iTrader: (2) Garage List 2008 E93 335i [3.66]	they the could possibly be vanos, injectors or coils. i do get into limp mode at WOT with all these codes
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07-09-2012, 02:14 PM	#10
tofu- Banned 88 Rep 2,854 Posts Drives: 335i Jet Black/Coral Red Join Date: Mar 2010 Location: nyc iTrader: (4)	car probably needs a new engine. likely has suspension damage as well. likely will cost upwards of 5 figures (USD) to repair. sorry for your loss.
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07-09-2012, 02:19 PM	#11
wren57 Roll Tide 606 Rep 2,363 Posts Drives: 335i Join Date: Jul 2010 Location: St Louis iTrader: (10)	As has been said already, pull the codes and report back. In the future, add one mod at a time. That way if something creates a malfunction it will be easier to diagnose.
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07-09-2012, 02:20 PM	#12
themyst Major General 189 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	__________________ E90 LCI N54 6AT
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07-09-2012, 04:25 PM	#14
marcvtec Banned 411 Rep 2,703 Posts Drives: M5 Join Date: Oct 2006 Location: toronto iTrader: (0)	Misplaced o2 sensors ? Pull the code
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07-10-2012, 01:06 AM	#15
pettway69 Registered 0 Rep 1 Posts Drives: 2008 335i E90 Join Date: May 2012 Location: Hawaii iTrader: (0)	Had similar problem, turned out to be the vacuum tanks were cracked
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07-10-2012, 04:47 AM	#16
barton2002 Second Lieutenant 33 Rep 271 Posts Drives: E92 ZCP M3 Frozen Grey Join Date: Feb 2010 Location: Bath & Hong Kong iTrader: (0)	Guys! Code has been identified as follows: 3100 low boost mode engaged - CEL Displayed 2A87 Outlet-Vanous variable cam control test, mechanics. So these are the codes, it popped up again instantly when I floored it. What should I do it. Advice appreciated. Thanks
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07-10-2012, 05:19 AM	#18
barton2002 Second Lieutenant 33 Rep 271 Posts Drives: E92 ZCP M3 Frozen Grey Join Date: Feb 2010 Location: Bath & Hong Kong iTrader: (0)	So do changing the solenoids should do the job right?
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