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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Engine Misfiring cylinder 2 & 4



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      09-03-2015, 03:55 PM   #1
stinkfoot_e92
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Engine Misfiring cylinder 2 & 4

What are the physical indications of a bad sparkplug / coil? I will be attempting to service the bimmer tomorrow evening.
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      09-03-2015, 09:54 PM   #2
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A misfire is usually a coil. Modern plugs rarely go bad in modern cars. It also could be a bad injector. These cars are notorious for losing coils. Try replacing them as a first step.
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      09-04-2015, 06:58 AM   #3
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Better yet, get the fault codes read then you'll know what's actually causing the misfire, instead of guessing...
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      09-04-2015, 07:05 AM   #4
Delta0311
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You might also want to list if this is a N52, N54, or N55. N54 is a master pro at fucking up coils..
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      09-04-2015, 02:24 PM   #5
stinkfoot_e92
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I do have an dormant E92 328XI I'm no longer using (pending trade) could I pull the coils off that car and swap them onto banks 2 & 4?

Thanks for the feedback!!

-stink
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      09-04-2015, 02:32 PM   #6
stinkfoot_e92
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FYI...

Cheapy scanner (autozone) Detected misfire on cylinder 2 and 4. I do have those suspected coils out and they actually look fairly new. Anything out the ordinary I'm supposed to look for on bad coils?
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      09-04-2015, 02:56 PM   #7
stinkfoot_e92
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Logs from cheap scanner.

P0050
H02S HEATER CONTROL
Circuit Bank 2 Sensor 1

P0430
Catalyst system efficiency below threshold bank 2

P0140
02 sensor circuit No activity detected bank 1 sensor 2

P0304
Cylinder 4 misfire detected

P2198
02 sensor signal biased / stuck rich bank 2 sensor 1

P0302
Cylinder 2 misfire detected

P2247
02 sensor reference voltage circuit / open bank 2 sensor 1

P0050
H02S heater control circuit bank2 sensor 1

P0155
02 sensor heater circuit bank2 sensor 1

P3027
Manufacturer control

P0420
Catalyst system efficiency below threshold bank 1
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      09-04-2015, 03:47 PM   #8
stinkfoot_e92
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N54 engine, can I swap coils from my 328xi?
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      09-04-2015, 04:08 PM   #9
stinkfoot_e92
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So according to ECS tuning the 328 and 335 share the same MFG# from BOSCH.
Bosch 2550226 Mfg#: 12137594937.

Just confirmed the coil packs from my 335 are indeed ending 7594937.
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      09-08-2015, 09:14 PM   #10
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Quote:
Originally Posted by Delta0311 View Post
..N54 is a master pro at fucking up coils..
I love that!

OP, hope you get this sorted out though!
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      09-15-2015, 10:15 AM   #11
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Sorry for the late response and the mileage is 127xxx. Unknown history prior to 90xxx, purchased car @ high miles.
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