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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-21-2013, 12:12 AM   #1
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Join Date: Jun 2006
Location: New York
Posts: 623
My Ride: 01 330ci
Misfire codes

My car is putting out these codes:
p0313 - misfire detected with Low Fuel
p0300 - Random/Multiple Cylinder Misfire Detected
p1345 - Misfire cyl 2 with fuel cutoff
p1347 - Misfire Cylinder 3 With Fuel Cut-off
p1343 - Misfire Cylinder1 With FuelCut-off
p0171 - system too lean (bank 1)
p0174 - system to lean (Bank 2)

I am not sure what I should do first.

What i think is maybe wrong?

Change Spark Plugs? (I have put in new NGK about 10K ago)
New Coil Packs?
or my computer is shot

Whenever my car starts misfiring I turn the car off, and then I turn it back on and it runs good.
It starts misfiring when I am idling usually

Where should I start? Would love to here some feedback from the mechanics on the forum.
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