Need help n54b30

Shaman_ua · 04-09-2024, 07:07 AM

Hello, world! I am Eugene, from Ukraine. I have a 335i BMW, 2008, from the USA. WBAVB73588KY64100
I like this car, but have a problem. LTFT near +30, cat back is black, but no smoke. PVC new, fuel pumps new, rail pressure sensor and low fuel pressure sensor is new. I put smoke machine, and don’t see the problem. Only need to change the gasket from the crankcase. A see an oil from it. And she it a lot of fuel, this is a problem too. I have HHD flasher, and can see the logs. Can someone help, please?

Shaman_ua · 04-09-2024, 10:20 AM

I have these codes now, 29E1, 2AAF

Shaman_ua · 04-18-2024, 02:49 PM

Thank you! Why you don’t want to help?

BalanBro · 04-19-2024, 08:40 AM

Have you checked or changed your oxygen sensors, particularly the upstream ones? Those are directly referenced to adjust fueling for proper AFRs. +30 LTFT is super high, leading me to believe your oxygen sensor(s) may be dead and causing the ECU to dump fuel.

I'm relatively new to BMWs in general, but I assume there are 2 banks indicated for fuel trims? If so, is the +30 LTFT on one bank or both?

04-09-2024, 07:07 AM	#1
Shaman_ua Registered 0 Rep 3 Posts Drives: BMW e90, 335i Join Date: Apr 2024 Location: Ukraine, Odessa iTrader: (0)	Hello, world! I am Eugene, from Ukraine. I have a 335i BMW, 2008, from the USA. WBAVB73588KY64100 I like this car, but have a problem. LTFT near +30, cat back is black, but no smoke. PVC new, fuel pumps new, rail pressure sensor and low fuel pressure sensor is new. I put smoke machine, and don’t see the problem. Only need to change the gasket from the crankcase. A see an oil from it. And she it a lot of fuel, this is a problem too. I have HHD flasher, and can see the logs. Can someone help, please?
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04-09-2024, 10:20 AM	#2
Shaman_ua Registered 0 Rep 3 Posts Drives: BMW e90, 335i Join Date: Apr 2024 Location: Ukraine, Odessa iTrader: (0)	I have these codes now, 29E1, 2AAF Attached Images
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04-18-2024, 02:49 PM	#3
Shaman_ua Registered 0 Rep 3 Posts Drives: BMW e90, 335i Join Date: Apr 2024 Location: Ukraine, Odessa iTrader: (0)	Thank you! Why you don’t want to help?
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04-19-2024, 08:40 AM	#4
BalanBro New Member 3 Rep 5 Posts Drives: 2009 E93 335I Join Date: Jan 2024 Location: 08889 iTrader: (0)	Have you checked or changed your oxygen sensors, particularly the upstream ones? Those are directly referenced to adjust fueling for proper AFRs. +30 LTFT is super high, leading me to believe your oxygen sensor(s) may be dead and causing the ECU to dump fuel. I'm relatively new to BMWs in general, but I assume there are 2 banks indicated for fuel trims? If so, is the +30 LTFT on one bank or both?
	Appreciate 0 Quote