Moving o2 sensors with test pipes

Edward · 02-29-2016, 01:04 PM

Quote:

Originally Posted by Mr. Liu

I am not sure that is true - I called Akra to specifically ask them and they said it only suppresses emissions faults, not everything related to a CEL.

There's a lot of conflicting info about this. You can't just clear an emission fault only when it comes to the CEL itself. Also, I think the Delete-R doesn't actually give you an emission "ok" signal in the ECU for the smog testing. All it essentially does is dupe your ECU into thinking all is ok.

A full coding job would take care of all of this since it would adjust the parameter to allow for excess air flow once the primary cat is removed.

EnderG60 · 03-03-2016, 01:52 PM

Quote:

Originally Posted by Mr. Liu

I am not sure that is true - I called Akra to specifically ask them and they said it only suppresses emissions faults, not everything related to a CEL.

All that does is move it from a moronic option to "Ok Ill spend a little more and not deal with the work of moving the sensors."

Its still $200 more than moving the sensors and in my eyes its more of a ghetto rig fix.

Either way the car is still running great and no CEL.

M3an V8 · 03-15-2016, 01:03 PM

Just a heads up, the male and female connector part numbers listed on this thread will not work for the 08 model. The guides inside the connectors are clocked differently and the rubber seal is yellow vs blue on the actual rear O2 sensor connector. Time for plan B, OP you got PM.

EnderG60 · 03-17-2016, 10:34 AM

Try giving your local parts department a call. I spent about an hour on the phone with mine tracking down the correct part numbers.

EnderG60 · 03-17-2016, 05:21 PM

Welp Ive run into my first issue which I believe to be a result from this mod.

Its gotten hotter here, around 80-85F, and my idle while stopped occasionally bounces and today the car died at a light. Starts right back up and runs fine otherwise and still no CEL.

Not sure what might be the root of this, could be unrelated but Im not sure yet.

CognitiveDistortion · 03-17-2016, 05:25 PM

That sounds like the fuel tank breather valve issue. It tends to become more pronounced in hotter climates.

Todd0131 · 03-17-2016, 07:34 PM

mine just was doing the same and codes for o2 sensors pulled up. Replaced them and all is good now. I thought it was the tank issue or icv but was o2 sensor. Could be your issue since you have been messing with them.

Todd

EnderG60 · 03-18-2016, 02:10 PM

Im going to look into it this weekend, did yours have the CEL when that happened?

Todd0131 · 03-18-2016, 02:41 PM

yes it did, I am not sure of the code though. I would idle really bad and sometimes pop into neutral and die. The shop said was both o2 so warranty replaced them and all is good.

WhatsADSM · 04-03-2016, 02:44 PM

Honestly I think your erattic idle issue is related to something. Rarely have I seen any ECU use the secondaries for anything other than verifying cat performance. I suspect you have another issue (potentially front o2s, icv, etc.)

I just purchased all the parts to do this myself so once I get a chance to pull the car out for the year and work on it I'll post up my results here as well.

M3an V8 · 04-13-2016, 12:59 AM

Okay, so I finally got to do this but it may have thrown my car into limp mode. I finished my install yesterday, drove to and from work today (round trip approx. 50 miles) everything was normal, turned it off for an hour and the next start up limp mode (half engine). The car could barely idle, pulled the codes and got a 2B23 which is the Idle Control Actuator, however, I replaced that about 10k miles ago so Im doubtful its faulty. So I went back to stock, cleared the codes and cycle the car on and off (various time intervals), scanned again and no more codes. Im a bit puzzled, lets see if that code shows up again with the stock set up.

EnderG60 · 04-13-2016, 09:26 AM

I dont see how anything you did for this could effect the idle actuator. If it was recently replaced I would think a wire got pumped loose.

My idle issue went away when it got cooler out so Im pretty sure if it comes back with the hotter weather it will be the fuel breather.

Keep us posted on what happens though.

IIAp3x · 04-13-2016, 09:33 AM

Would it not be beneficial to force the adaptation cycle after doing something like this? Removing the primary cats surely creates less back pressure... Maybe the change was drastic and triggered a fault in the ECU? I assume you are not running a custom tune right?

M3an V8 · 04-13-2016, 12:45 PM

Nope no tune. Well, I scanned the car again before leaving for work and when I arrived at work, no codes. I guess I'll find out in a few more drive cycles if the O2 relocation was the culprit or not.

EnderG60 · 04-13-2016, 01:20 PM

Quote:

Originally Posted by IIAp3x

Would it not be beneficial to force the adaptation cycle after doing something like this? Removing the primary cats surely creates less back pressure... Maybe the change was drastic and triggered a fault in the ECU? I assume you are not running a custom tune right?

How do you force the adaptation cycle?

IIAp3x · 04-13-2016, 01:28 PM

Quote:

Originally Posted by M3an V8

Nope no tune. Well, I scanned the car again before leaving for work and when I arrived at work, no codes. I guess I'll find out in a few more drive cycles if the O2 relocation was the culprit or not.

I think that when you reset a check engine light it automatically forces the adaptation to cycle to start so maybe that is all it needed... Maybe someone can confirm that? Certainly it would throw an emissions code if it were due to the position of the post-cat O2 sensors being moved, so it is strange that its not a code relevant to that... But then again it could just be bad timing of a failed part...

IIAp3x · 04-13-2016, 01:31 PM

Quote:

Originally Posted by EnderG60

How do you force the adaptation cycle?

I am not 100% on how, but I am sure there is a way to do it... Maybe pull the battery or with a decent scanner?

Does anyone know if there is a way to force adaptation?

M3an V8 · 04-13-2016, 04:36 PM

Quote:

Originally Posted by IIAp3x

Quote:

Originally Posted by M3an V8

Nope no tune. Well, I scanned the car again before leaving for work and when I arrived at work, no codes. I guess I'll find out in a few more drive cycles if the O2 relocation was the culprit or not.

I think that when you reset a check engine light it automatically forces the adaptation to cycle to start so maybe that is all it needed... Maybe someone can confirm that? Certainly it would throw an emissions code if it were due to the position of the post-cat O2 sensors being moved, so it is strange that its not a code relevant to that... But then again it could just be bad timing of a failed part...

Yeah thats why I was a bit puzzled when the codes were not related to the rear O2's. Hopefully its not a faulty ICV, its not that old but then again failure can occur at anytime.

WhatsADSM · 04-13-2016, 08:09 PM

You can clear adaptations with BMWLogger I believe

IIAp3x · 04-14-2016, 12:20 PM

Quote:

Originally Posted by M3an V8

Yeah thats why I was a bit puzzled when the codes were not related to the rear O2's. Hopefully its not a faulty ICV, its not that old but then again failure can occur at anytime.

Yup sure can! I went through 3 alternators in my e46 m3 one year because the electrical parts these days are all re-manufactured and quality standards suck! They were bosch alternators too!

WhatsADSM · 04-26-2016, 01:06 AM

Buyer beware. I just made O2 extension harnesses with the part numbers provided only to find out that my secondary o2s do not fit into the receptacle. I have a 2011 E90 DCT. At first glance eveything looked compatible however the sensor and receptacle are keyed differently. And you can see a slightly different series marking on the receptacle (02) versus sensor (03) indicating a keying difference.

I can't seem to understand why since according to real OEM the o2 sensor part numbers are the same for my car and a later 2012 E92 M.

In any case not sure where I go from here other than to hack up my stock sensors and extend the wiring that way.

Just understand if you attempt this with the part numbers provided there is some risk you will not be able to complete it (and waste $100)

On that note if anyone is looking for some extension harnesses, I have some very well made ones for sale

WhatsADSM · 04-26-2016, 12:42 PM

The more I look into the whole connector part number thing the more I am skeptical of the part numbers listed earlier. Those part numbers only cross-reference to a non-M E9x. Such as an E9x with a N45, N52, N54, etc. Those cars have a different oxygen sensor as well that is keyed differently therefore this wouldn't match up.

Unfortunately according to RealOEM it seems to understand that the connector part for an E9x M3 exists just that the part number is unknown. It is also unknown for any of the cars that share a secondary oxygen sensor with the S65 (such as N62 550ci, N73 760, S63 X5M, etc.). I have to go pickup a radiator hose from my local BMW dealer anyways so maybe I'll see if I can convince them to look in their system for the connectors for my VIN.

03-15-2016, 01:03 PM	#25
M3an V8 Private 26 Rep 84 Posts Drives: E90 M3 Alpine Weiss Join Date: Oct 2013 Location: OC iTrader: (0)	Just a heads up, the male and female connector part numbers listed on this thread will not work for the 08 model. The guides inside the connectors are clocked differently and the rubber seal is yellow vs blue on the actual rear O2 sensor connector. Time for plan B, OP you got PM.
	Appreciate 0 Quote

03-17-2016, 10:34 AM	#26
EnderG60 Private First Class 38 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	Try giving your local parts department a call. I spent about an hour on the phone with mine tracking down the correct part numbers.
	Appreciate 0 Quote

03-17-2016, 05:21 PM	#27
EnderG60 Private First Class 38 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	Welp Ive run into my first issue which I believe to be a result from this mod. Its gotten hotter here, around 80-85F, and my idle while stopped occasionally bounces and today the car died at a light. Starts right back up and runs fine otherwise and still no CEL. Not sure what might be the root of this, could be unrelated but Im not sure yet.
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03-17-2016, 05:25 PM	#28
CognitiveDistortion Second Lieutenant 65 Rep 242 Posts Drives: M3 Join Date: May 2014 Location: Atlanta, GA iTrader: (0)	That sounds like the fuel tank breather valve issue. It tends to become more pronounced in hotter climates.
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03-17-2016, 07:34 PM	#29
Todd0131 Lieutenant 380 Rep 530 Posts Drives: Yukon, stumpjumper, m3 Join Date: Jul 2013 Location: Tx iTrader: (0)	mine just was doing the same and codes for o2 sensors pulled up. Replaced them and all is good now. I thought it was the tank issue or icv but was o2 sensor. Could be your issue since you have been messing with them. Todd
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03-18-2016, 02:10 PM	#30
EnderG60 Private First Class 38 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	Im going to look into it this weekend, did yours have the CEL when that happened?
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03-18-2016, 02:41 PM	#31
Todd0131 Lieutenant 380 Rep 530 Posts Drives: Yukon, stumpjumper, m3 Join Date: Jul 2013 Location: Tx iTrader: (0)	yes it did, I am not sure of the code though. I would idle really bad and sometimes pop into neutral and die. The shop said was both o2 so warranty replaced them and all is good.
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04-03-2016, 02:44 PM	#32
WhatsADSM Lieutenant 228 Rep 537 Posts Drives: 2011 135i Join Date: Sep 2013 Location: Milwaukee iTrader: (2)	Honestly I think your erattic idle issue is related to something. Rarely have I seen any ECU use the secondaries for anything other than verifying cat performance. I suspect you have another issue (potentially front o2s, icv, etc.) I just purchased all the parts to do this myself so once I get a chance to pull the car out for the year and work on it I'll post up my results here as well.
	Appreciate 0 Quote

04-13-2016, 12:59 AM	#33
M3an V8 Private 26 Rep 84 Posts Drives: E90 M3 Alpine Weiss Join Date: Oct 2013 Location: OC iTrader: (0)	Okay, so I finally got to do this but it may have thrown my car into limp mode. I finished my install yesterday, drove to and from work today (round trip approx. 50 miles) everything was normal, turned it off for an hour and the next start up limp mode (half engine). The car could barely idle, pulled the codes and got a 2B23 which is the Idle Control Actuator, however, I replaced that about 10k miles ago so Im doubtful its faulty. So I went back to stock, cleared the codes and cycle the car on and off (various time intervals), scanned again and no more codes. Im a bit puzzled, lets see if that code shows up again with the stock set up.
	Appreciate 0 Quote

04-13-2016, 09:26 AM	#34
EnderG60 Private First Class 38 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	I dont see how anything you did for this could effect the idle actuator. If it was recently replaced I would think a wire got pumped loose. My idle issue went away when it got cooler out so Im pretty sure if it comes back with the hotter weather it will be the fuel breather. Keep us posted on what happens though.
	Appreciate 0 Quote

04-13-2016, 09:33 AM	#35
IIAp3x Captain 184 Rep 656 Posts Drives: 2008 BMW E92 M3 Join Date: Apr 2015 Location: Perdido Key, FL iTrader: (0) Garage List 2008 Mercedes C300 [0.00] 2009 Mercedes ML320 ... [0.00] 2008 BMW E92 M3 [0.00]	Would it not be beneficial to force the adaptation cycle after doing something like this? Removing the primary cats surely creates less back pressure... Maybe the change was drastic and triggered a fault in the ECU? I assume you are not running a custom tune right?
	Appreciate 0 Quote

04-13-2016, 12:45 PM	#36
M3an V8 Private 26 Rep 84 Posts Drives: E90 M3 Alpine Weiss Join Date: Oct 2013 Location: OC iTrader: (0)	Nope no tune. Well, I scanned the car again before leaving for work and when I arrived at work, no codes. I guess I'll find out in a few more drive cycles if the O2 relocation was the culprit or not.
	Appreciate 0 Quote

04-13-2016, 08:09 PM	#41
WhatsADSM Lieutenant 228 Rep 537 Posts Drives: 2011 135i Join Date: Sep 2013 Location: Milwaukee iTrader: (2)	You can clear adaptations with BMWLogger I believe
	Appreciate 0 Quote

04-26-2016, 01:06 AM	#43
WhatsADSM Lieutenant 228 Rep 537 Posts Drives: 2011 135i Join Date: Sep 2013 Location: Milwaukee iTrader: (2)	Buyer beware. I just made O2 extension harnesses with the part numbers provided only to find out that my secondary o2s do not fit into the receptacle. I have a 2011 E90 DCT. At first glance eveything looked compatible however the sensor and receptacle are keyed differently. And you can see a slightly different series marking on the receptacle (02) versus sensor (03) indicating a keying difference. I can't seem to understand why since according to real OEM the o2 sensor part numbers are the same for my car and a later 2012 E92 M. In any case not sure where I go from here other than to hack up my stock sensors and extend the wiring that way. Just understand if you attempt this with the part numbers provided there is some risk you will not be able to complete it (and waste $100) On that note if anyone is looking for some extension harnesses, I have some very well made ones for sale
	Appreciate 0 Quote

04-26-2016, 12:42 PM	#44
WhatsADSM Lieutenant 228 Rep 537 Posts Drives: 2011 135i Join Date: Sep 2013 Location: Milwaukee iTrader: (2)	The more I look into the whole connector part number thing the more I am skeptical of the part numbers listed earlier. Those part numbers only cross-reference to a non-M E9x. Such as an E9x with a N45, N52, N54, etc. Those cars have a different oxygen sensor as well that is keyed differently therefore this wouldn't match up. Unfortunately according to RealOEM it seems to understand that the connector part for an E9x M3 exists just that the part number is unknown. It is also unknown for any of the cars that share a secondary oxygen sensor with the S65 (such as N62 550ci, N73 760, S63 X5M, etc.). I have to go pickup a radiator hose from my local BMW dealer anyways so maybe I'll see if I can convince them to look in their system for the connectors for my VIN.
	Appreciate 0 Quote