Car started violently shaking, check engine light came on....help

08-335 · 04-26-2012, 10:28 AM

I was getting on Lake Shore Drive last night and i was doing around 35mph and then applied 40-50% throttle.

The exhaust starts to sputter and the dashboard starts to violently rumble and shake and the Check Engine Soon (or whatever it says) light comes on.

I get off the gas and all symptoms stop. I gas it again and i get the same rumble and sputter so I quickly get off the throttle.

I get in the slow lane and then 5 seconds later all the symptoms go away. The whole episode lasted maybe 25 seconds. I turned off the traction control and gave it 35-40% throttle and there wasn't a sputter or rumble.

I normally drive my car with out the traction control on because when I go anywhere near wide open throttle the traction control light comes on.

Does anyone have a clue what happened? I have been driving the car around since to see if it would happen again and the car appears to be completely fine.

Any thoughts????

Regards.

acdHQK713K · 04-26-2012, 10:43 AM

You have a COBB AP. Use it. Read the codes, then post.

Chrisred · 04-26-2012, 11:20 AM

Same thing happened to me. The only code (cel) that I see is lambda probe in front of cat #2. Must be the beginning of misfires. Just wait until u find which cylinder.

08-335 · 04-26-2012, 11:25 AM

I will check it out with my Cobb AP.

I have had the dp's on for months now (and have the dp fix) so why a problem would come up now as opposed to when i first put them on is kinda weird to me.

I will check for codes on my AP tonight.

marv85 · 04-26-2012, 11:28 AM

BMS DP fix and COBB maps not a good idea, unless you are talking about COBB's stage2 cat code suppression

08-335 · 04-26-2012, 11:33 AM

Quote:

Originally Posted by marv85

BMS DP fix and COBB maps not a good idea, unless you are talking about COBB's stage2 cat code suppression

I have no idea what are you talking about, please explain more.

All i know is, when you get catless dps and take your Cobb off, you will get codes so i got the DP fix.

Regards

skim7x · 04-26-2012, 11:34 AM

I'm thinking misfire

marv85 · 04-26-2012, 11:35 AM

Quote:

Originally Posted by skim7x

I'm thinking misfire

Most probably misfire I agree

BMWsky · 04-26-2012, 11:36 AM

Could be several things: Injectors, plugs, coils, VANOS, fuel pump, etc.

marv85 · 04-26-2012, 11:37 AM

Quote:

Originally Posted by 08-335

I have no idea what are you talking about, please explain more.

All i know is, when you get catless dps and take your Cobb off, you will get codes so i got the DP fix.

Regards

That was a side note and not an answer to your problem

I thought you had COBB on and were using the DP fix from BMS. If that is the case, then remove the DP fix.

you most probably have a misfire

08-335 · 04-26-2012, 11:44 AM

Quote:

Originally Posted by marv85

That was a side note and not an answer to your problem

I thought you had COBB on and were using the DP fix from BMS. If that is the case, then remove the DP fix.

you most probably have a misfire

I am currently running the BMS DP fix while using Cobb stage 2, is this wrong?

Is this causing a loss in performance???

Regards.

marv85 · 04-26-2012, 11:50 AM

Quote:

Originally Posted by 08-335

I am currently running the BMS DP fix while using Cobb stage 2, is this wrong?

Is this causing a loss in performance???

Regards.

Yes it is wrong. the DP fix is changing the signal to make it look like the cats are still in place and that is why the DME won't complain and show you the CEL light. you obviously don't want to be changing the signal, you want the DME to know the actual value coming from the sensor and not a modified one. DP fix is most useful for passing Emissions in some states (readiness), but it's not to be used with tunes.

aflatau · 04-26-2012, 11:59 AM

My guess it was bad fuel, fuel pump or misfire.. but just read the codes.

08-335 · 04-26-2012, 12:27 PM

Quote:

Originally Posted by marv85

Yes it is wrong. the DP fix is changing the signal to make it look like the cats are still in place and that is why the DME won't complain and show you the CEL light. you obviously don't want to be changing the signal, you want the DME to know the actual value coming from the sensor and not a modified one. DP fix is most useful for passing Emissions in some states (readiness), but it's not to be used with tunes.

Ok, I will check for codes tonight.

I will download a DYI for the DP fix, I had it installed by VS Motorsports along with the DP's and i had them label the wiring for me so it should be easy.....i hope.

Thanks!

enrita · 04-26-2012, 02:50 PM

you dont need the dp fix at all with stage 2.
Even if you run stock it will just throw a cell. nothing to worry about. just clear the code with the cobb ap. Run quite some time like that, no issues with performance as well.
To pass emissions is another story if you need to pass readyness.

08-335 · 04-26-2012, 06:45 PM

The codes listed below are what my Cobb AP displayed:

P29CE
H2F6C
H29F4
H29F5

I have no idea what these codes mean but i do know that the "P29CE" is for a misfire on cylinder 2 according to my AP.

What do you guys suggest for next steps???

Regards

djjasper · 04-26-2012, 06:53 PM

Swap #2 and #1 coil and see if your misfire moves to cylinder 1. That way you'll know it is the coil and not the injector.

acdHQK713K · 04-26-2012, 07:03 PM

Quote:

Originally Posted by 08-335

The codes listed below are what my Cobb AP displayed:

P29CE
H2F6C
H29F4
H29F5

I have no idea what these codes mean but i do know that the "P29CE" is for a misfire on cylinder 2 according to my AP.

What do you guys suggest for next steps???

Regards

Told you the Cobb AP code reading would help

Now just follow the misfire diagnose guidelines that are all over his forum. Cobb made a nice video you can follow.

08-335 · 04-26-2012, 07:09 PM

Quote:

Originally Posted by Stangorang

Told you the Cobb AP code reading would help

Now just follow the misfire diagnose guidelines that are all over his forum. Cobb made a nice video you can follow.

I am thinking I need to remove this BMW DP fix asap and then see whats up.

THANKS FOR THE POST!

08-335 · 04-26-2012, 07:21 PM

How do i find out what these codes are:

H2F6C
H29F4
H29F5

??

Is there a book with a list of codes?

08-335 · 04-26-2012, 07:26 PM

If i take my car to a BMW service center to service the codes, do you think they will try to say i voided my warranty with the DP's and therefore can't do the work under warranty?

I am going to be bringing me car in soon anyways to repair some damage to my fender (stupid people with their SUVs) so i would just say "I have noticed that my car has been misfiring lately."

Would they then complain about my DP's?

Regards

djjasper · 04-26-2012, 07:32 PM

Google search without the "H" in the code.

04-26-2012, 10:28 AM	#1
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	Car started violently shaking, check engine light came on....help I was getting on Lake Shore Drive last night and i was doing around 35mph and then applied 40-50% throttle. The exhaust starts to sputter and the dashboard starts to violently rumble and shake and the Check Engine Soon (or whatever it says) light comes on. I get off the gas and all symptoms stop. I gas it again and i get the same rumble and sputter so I quickly get off the throttle. I get in the slow lane and then 5 seconds later all the symptoms go away. The whole episode lasted maybe 25 seconds. I turned off the traction control and gave it 35-40% throttle and there wasn't a sputter or rumble. I normally drive my car with out the traction control on because when I go anywhere near wide open throttle the traction control light comes on. Does anyone have a clue what happened? I have been driving the car around since to see if it would happen again and the car appears to be completely fine. Any thoughts???? Regards. __________________ 2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels -Previously Owned- 2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111
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04-26-2012, 11:20 AM	#3
Chrisred Captain 63 Rep 788 Posts Drives: BMW 335xi coupe Join Date: Jan 2010 Location: Montreal, Canada iTrader: (0)	Same thing happened to me. The only code (cel) that I see is lambda probe in front of cat #2. Must be the beginning of misfires. Just wait until u find which cylinder. __________________ JB4 Trebila tuned cp-e IC AMS exhaust BMS DCI AR DP's METH RB TURBO 19" VMR VB3 Stoptech BBK TC KLINE VORSHLAG SPEC STG 3 OSS design
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04-26-2012, 11:25 AM	#4
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	I will check it out with my Cobb AP. I have had the dp's on for months now (and have the dp fix) so why a problem would come up now as opposed to when i first put them on is kinda weird to me. I will check for codes on my AP tonight. __________________ 2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels -Previously Owned- 2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111
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04-26-2012, 11:28 AM	#5
marv85 Colonel 70 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	BMS DP fix and COBB maps not a good idea, unless you are talking about COBB's stage2 cat code suppression __________________ '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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04-26-2012, 11:34 AM	#7
skim7x Colonel 208 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	I'm thinking misfire __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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04-26-2012, 10:43 AM	#2
acdHQK713K Major 231 Rep 1,473 Posts Drives: Car Join Date: Mar 2010 Location: USA iTrader: (9)	You have a COBB AP. Use it. Read the codes, then post.
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04-26-2012, 11:36 AM	#9
BMWsky Major 24 Rep 1,244 Posts Drives: 335i Join Date: Dec 2010 Location: Webster NY iTrader: (1)	Could be several things: Injectors, plugs, coils, VANOS, fuel pump, etc.
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04-26-2012, 11:59 AM	#13
aflatau First Lieutenant 54 Rep 327 Posts Drives: XM Join Date: Mar 2012 Location: Buffalo, NY iTrader: (1)	My guess it was bad fuel, fuel pump or misfire.. but just read the codes. __________________ 24 XM(Current) 22 X540i(Sold) 21 M5 Comp(Sold) 07 Single Turbo 335i(one of the first, sold)
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04-26-2012, 02:50 PM	#15
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	you dont need the dp fix at all with stage 2. Even if you run stock it will just throw a cell. nothing to worry about. just clear the code with the cobb ap. Run quite some time like that, no issues with performance as well. To pass emissions is another story if you need to pass readyness. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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04-26-2012, 06:45 PM	#16
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	The codes listed below are what my Cobb AP displayed: P29CE H2F6C H29F4 H29F5 I have no idea what these codes mean but i do know that the "P29CE" is for a misfire on cylinder 2 according to my AP. What do you guys suggest for next steps??? Regards __________________ 2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels -Previously Owned- 2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111
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04-26-2012, 06:53 PM	#17
djjasper Lieutenant 41 Rep 557 Posts Drives: 2015 435i 6MT Join Date: Dec 2011 Location: CO iTrader: (0)	Swap #2 and #1 coil and see if your misfire moves to cylinder 1. That way you'll know it is the coil and not the injector.
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04-26-2012, 07:21 PM	#20
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	How do i find out what these codes are: H2F6C H29F4 H29F5 ?? Is there a book with a list of codes? __________________ 2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels -Previously Owned- 2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111
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04-26-2012, 07:26 PM	#21
08-335 Second Lieutenant 17 Rep 223 Posts Drives: 2015 BMW 335i xdrive Join Date: Nov 2011 Location: Chicago, IL iTrader: (0)	If i take my car to a BMW service center to service the codes, do you think they will try to say i voided my warranty with the DP's and therefore can't do the work under warranty? I am going to be bringing me car in soon anyways to repair some damage to my fender (stupid people with their SUVs) so i would just say "I have noticed that my car has been misfiring lately." Would they then complain about my DP's? Regards __________________ 2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels -Previously Owned- 2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111
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04-26-2012, 07:32 PM	#22
djjasper Lieutenant 41 Rep 557 Posts Drives: 2015 435i 6MT Join Date: Dec 2011 Location: CO iTrader: (0)	Google search without the "H" in the code.
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