Problem after intake install

Elixis · 12-20-2017, 10:08 AM

Hey everyone,

I installed an ATM intake recently. Shortly after installation, I got an SES light. The car goes in and out of limp mode randomly when driving. The code points to EGR issues, however I spoke with Dave at ATM. He has been very responsive and helpful, however I do not have a solution. I know that it is not the intake causing this because it is clearly a successful product. However, the problem persists and he confirmed that it seems like there is an air leak somewhere. All connections are sealed. The breather hose is not damaged. The only thing that we have narrowed it down to, is that the maf sensor may be damaged and this is what is causing the issues. Based upon everything that I described above, does this sound like a faulty maf sensor? There are no other issues besides randomly going in and out of limp mode.

Thanks for your input!

sukutash · 12-20-2017, 11:32 AM

A bad MAF sensor will cause limp mode. Happened to me but I got the associated codes. My cars limp mode was correlated with ambient temperature. Cooler morning temps out no limp mode. Mid day, warmer temps, limp mode.

BB_cuda · 12-20-2017, 11:47 AM

I've found the MAF connector not fully clicked in before and got SES. You've been working right there so it's worth a try.

Elixis · 12-20-2017, 09:14 PM

Thanks for the info guys!

Yozh · 12-21-2017, 01:07 AM

Please also post your trouble codes, it will be easier to diagnose, otherwise it's blind leading the blind.

Elixis · 12-21-2017, 02:48 AM

Quote:

Originally Posted by Yozh

Please also post your trouble codes, it will be easier to diagnose, otherwise it's blind leading the blind.

I would but attaching the file from my phone wasn't working last night and it's not working now. I'll try again at home later when I'm near a computer. Thanks!

Elixis · 12-21-2017, 03:56 AM

The code is 004B81. I was going to upload a Carly screenshot, but the code will do

dmanb2b · 12-21-2017, 09:23 AM

Quote:

Originally Posted by Elixis

The code is 004B81. I was going to upload a Carly screenshot, but the code will do

http://www.e90post.com/forums/showthread.php?t=1424628

not sure this is very helpful, but a lead

robnitro · 12-21-2017, 04:49 PM

Maf sensor improperly connected can make the car think the egr is not working well. Also check any vac lines nearby where you were working with the intake.

caraudio1 · 12-22-2017, 05:44 AM

Check to see that the MAF is oriented correctly. The arrow points in the direction of the airflow.

12-20-2017, 10:08 AM	#1
Elixis Second Lieutenant 38 Rep 243 Posts Drives: BMW E90 335d/E39 540i/G30 540d Join Date: Aug 2013 Location: Los Angeles, Ca iTrader: (1) Garage List 2003 E46 330i [0.00] 2003 E39 540i [0.00] 2011 E90 335d [0.00] 2018 G30 540d [0.00]	Problem after intake install Hey everyone, I installed an ATM intake recently. Shortly after installation, I got an SES light. The car goes in and out of limp mode randomly when driving. The code points to EGR issues, however I spoke with Dave at ATM. He has been very responsive and helpful, however I do not have a solution. I know that it is not the intake causing this because it is clearly a successful product. However, the problem persists and he confirmed that it seems like there is an air leak somewhere. All connections are sealed. The breather hose is not damaged. The only thing that we have narrowed it down to, is that the maf sensor may be damaged and this is what is causing the issues. Based upon everything that I described above, does this sound like a faulty maf sensor? There are no other issues besides randomly going in and out of limp mode. Thanks for your input!
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12-20-2017, 11:32 AM	#2
sukutash First Lieutenant 67 Rep 375 Posts Drives: 2011 335d, 2020 M2C Join Date: Jan 2011 Location: Ft Worth iTrader: (7) Garage List 2020 BMW M2 KOMP [0.00] 2014 BMW 535i [0.00] 2012 MERC E63 AMG W ... [0.00] 2011 BMW 335d [0.00]	A bad MAF sensor will cause limp mode. Happened to me but I got the associated codes. My cars limp mode was correlated with ambient temperature. Cooler morning temps out no limp mode. Mid day, warmer temps, limp mode.
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12-20-2017, 11:47 AM	#3
BB_cuda Brigadier General 776 Rep 3,559 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	I've found the MAF connector not fully clicked in before and got SES. You've been working right there so it's worth a try.
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12-20-2017, 09:14 PM	#4
Elixis Second Lieutenant 38 Rep 243 Posts Drives: BMW E90 335d/E39 540i/G30 540d Join Date: Aug 2013 Location: Los Angeles, Ca iTrader: (1) Garage List 2003 E46 330i [0.00] 2003 E39 540i [0.00] 2011 E90 335d [0.00] 2018 G30 540d [0.00]	Thanks for the info guys!
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12-21-2017, 01:07 AM	#5
Yozh Colonel 871 Rep 2,611 Posts Drives: 2011 335d M-Sport Join Date: Mar 2014 Location: Wet Coast iTrader: (4)	Please also post your trouble codes, it will be easier to diagnose, otherwise it's blind leading the blind.
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12-21-2017, 03:56 AM	#7
Elixis Second Lieutenant 38 Rep 243 Posts Drives: BMW E90 335d/E39 540i/G30 540d Join Date: Aug 2013 Location: Los Angeles, Ca iTrader: (1) Garage List 2003 E46 330i [0.00] 2003 E39 540i [0.00] 2011 E90 335d [0.00] 2018 G30 540d [0.00]	The code is 004B81. I was going to upload a Carly screenshot, but the code will do
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12-21-2017, 04:49 PM	#9
robnitro Captain 160 Rep 803 Posts Drives: x5 35d e70 2011 Join Date: Sep 2016 Location: NYC area iTrader: (0)	Maf sensor improperly connected can make the car think the egr is not working well. Also check any vac lines nearby where you were working with the intake.
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12-22-2017, 05:44 AM	#10
caraudio1 Enlisted Member 8 Rep 38 Posts Drives: 2011 335D Join Date: Dec 2014 Location: S.E. United States iTrader: (0)	Check to see that the MAF is oriented correctly. The arrow points in the direction of the airflow.
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