Bmw 320i n46 misfiring

raveendrarajah · 04-13-2019, 08:11 AM

I have this bmw 320i n46 from 2006, it makes misfire on cylinders 2 and 4 and comes with these error codes
29cc
29cd
29d0

The car has changed the following things
all 4 ignition coil
all 4 spark plugs
both cam sensors
crank sensor
2 lambda sensor
and the chain is as it should be.

Some suggestions?

relative4 · 04-13-2019, 10:41 AM

Swap injectors between #3 & #4, see if misfire follows.
FWIW, 29CD is #1, not #2.

Roxxen · 07-15-2019, 07:59 AM

Not sure if you're still chasing this issue but my workshop had same thing a couple months ago, ended up being a blocked catalyst converter

Dingsky · 11-14-2023, 08:00 AM

Quote:

Originally Posted by Roxxen

Not sure if you're still chasing this issue but my workshop had same thing a couple months ago, ended up being a blocked catalyst converter

Hi Roxxen, how was the blocked catalyst converter unblocked? replaced the whole thing? how much was the unit?

04-13-2019, 08:11 AM	#1
raveendrarajah Registered 0 Rep 1 Posts Drives: BMW 320I E90 2006 N46 Join Date: Nov 2018 Location: DENMARK iTrader: (0)	Bmw 320i n46 misfiring I have this bmw 320i n46 from 2006, it makes misfire on cylinders 2 and 4 and comes with these error codes 29cc 29cd 29d0 The car has changed the following things all 4 ignition coil all 4 spark plugs both cam sensors crank sensor 2 lambda sensor and the chain is as it should be. Some suggestions?
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04-13-2019, 10:41 AM	#2
relative4 Major 620 Rep 1,280 Posts Drives: '08 335xi E90 MT stage 1+ Join Date: Feb 2019 Location: Denver, CO iTrader: (0)	Swap injectors between #3 & #4, see if misfire follows. FWIW, 29CD is #1, not #2.
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07-15-2019, 07:59 AM	#3
Roxxen New Member 0 Rep 7 Posts Drives: 2005 E90 320i N46 Join Date: Jun 2019 Location: South Australia iTrader: (0)	Not sure if you're still chasing this issue but my workshop had same thing a couple months ago, ended up being a blocked catalyst converter
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