Fuel pump, injectors or O2 sensors?

aculp335i · 10-10-2019, 05:11 PM

Did plugs and coils about 20k miles ago along with walnut blast. Just started having a misfire at idle after running for about 1-2 minutes and restarting the car fixes it until it idles for another 1-2 minutes. I'm assuming injectors but maybe someone here has better knowledge of all these codes combined and what they mean together. Thanks guys and I understand there's countless misfire threads but maybe with this certain situation someone could shed some light on a specific area so I don't start with the common things and waste money. I appreciate if you don't come at my throat for it

relative4 · 10-10-2019, 07:14 PM

Codes?

aculp335i · 10-10-2019, 09:54 PM

I attached the photo in the original post but I guess it didn't upload, I'm trying again here

aculp335i · 10-10-2019, 10:02 PM

Quote:

Originally Posted by relative4

Codes?

I see my second attempt didn't work either.

Active codes
29CD - Cylinder 1 misfire
29CF - Cylinder 3 misfire
2C6C - Oxygen sensor 2 after catalytic converter: system check
2C7F - Lambda Control 2

Shadow codes (they come back after I clear all codes)
29F4 - DME: Catalytic-converter conversion
2AAF - Fuel pump, plausibility

Also need to mention, I have catless downpipes, burgertuning chargepipe and DCI's with stage 2 MHD tune. The exhaust is fully stock other than the downpipes.

Emilime75 · 10-10-2019, 10:12 PM

Swap some coils around to see if the problem follows. If it doesn't, swap plugs around...or just replace them. Come back with your findings.

10-10-2019, 05:11 PM	#1
aculp335i New Member 0 Rep 14 Posts Drives: Manual FBO E90 335i Join Date: Oct 2018 Location: Myrtle Beach SC iTrader: (0)	Fuel pump, injectors or O2 sensors? Did plugs and coils about 20k miles ago along with walnut blast. Just started having a misfire at idle after running for about 1-2 minutes and restarting the car fixes it until it idles for another 1-2 minutes. I'm assuming injectors but maybe someone here has better knowledge of all these codes combined and what they mean together. Thanks guys and I understand there's countless misfire threads but maybe with this certain situation someone could shed some light on a specific area so I don't start with the common things and waste money. I appreciate if you don't come at my throat for it
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10-10-2019, 07:14 PM	#2
relative4 Major 611 Rep 1,272 Posts Drives: '08 335xi E90 MT stage 1+ Join Date: Feb 2019 Location: Denver, CO iTrader: (0)	Codes?
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10-10-2019, 09:54 PM	#3
aculp335i New Member 0 Rep 14 Posts Drives: Manual FBO E90 335i Join Date: Oct 2018 Location: Myrtle Beach SC iTrader: (0)	I attached the photo in the original post but I guess it didn't upload, I'm trying again here
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10-10-2019, 10:12 PM	#5
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Swap some coils around to see if the problem follows. If it doesn't, swap plugs around...or just replace them. Come back with your findings.
	Appreciate 0 Quote