Member
Hi everyone, I could really use some guidance.
I own a 03 325ci.the car ran great but still, I decided to tune it my self.last week I replaced :
Spark plugs with part number NGK- BKR6EQUP
changed the oil and filter,
fuel filter and
air filter.(not K&N).
The car ran great for about 2 days and then I got CEL.The car started to misfire at idle.
It had
p0300
p1348
p1347
p1345
p1343
p1351
.missfire @ start, and fuel cut off codes ...
I searched and searched .I read so much about spark plugs ,I went ahead and replaced them with NGK-BKR6E-11. I cleared the codes and still got same codes again .seems like car ran smoother @ idle tho..
checked 4 vacuum leaks.found none.i figure if i had one I would get lean missfire code or something.I have read about the crankcase regulator and hoses going bad.Any one had same problem?
Last edited by 1gatonocturno; 07-12-2008 at 10:01 AM.
Member
One(or more) of ignition coil went bad or start failing.
Member
cam shaft position sensors.You have two of them.a bad coil wont throw that many codes
Member
thanks Bruceb, I will look into it.
Member
If you do not know meaning of these codes,say nothing.Only P1347 is related to camshaft sensors(Bank2,Crankshaft-/Camshaft os.Sensor Signal Out of Sequence),because of missfireing.Other are coils related.Problem lays definitely in bad coils, grounded wires or spark plugsOriginally Posted by bruceb241977
Member
maybe you can help jetflyer.
P1348 -cyl 4 misfire during start up.
p1347-cyl 3 fuel cut off.
p1345-cyl 2 fuel cut off.
p1352-cyl 6 missfire during start up.
p1343-cyl 1 fuel cut off.
p1351-cyl 5 fuel cut off.
cyl 1-3 no fuel, 4-6 missfire
I also forgot to mention No more p0300,after I changed plugs to BKR6E-11.I wish I had a FSM to check BMW specific codes.I will check Resistance to every coil.I beieve specs are .4-.8 Ohms .also forgot to mention ,that when I remove oil filler cap ,engine runs worse.
Member
Yours codes above are generic for any car with OBD-II.
P1348-ignition coil power output stage 1 open circuit
P1345-ignition coil power output stage 3 short to ground
P1343-ignition coil power output stage 2 short to ground
P1351-ignition coil control circuit high voltage
P0300-random/multiple cylinder misfire detected
First I would change back spark plugs to NGK BKR6EQUP(these ones are only the best for those engines)
When you reinstall them make sure that coils are not damaged and any wire not exposed and short grounded to engine .Make sure also you did not mess with spark plugs cables.
Member
P0300 - random misfire
P1347 - misfire #3 with fuel cut off
P1345 - misfire #2 with fuel cut off
P1343 - misfire #1 with fuel cut off
P0171 - too lean bank 1
P0300P - ?????
if I turn the car off and back on it runs smooth. just bougth the car was running fine. where do I start first? camshaft sensors? knock sensor? MAF?
thanks
02 330Ci
Member
Hi,
When you changed your spark plugs you probably didnt put that clear grease stuff onto your plug wire, that comes off your ignition coil i take it. you can actually burn those wires if you do not put it on. im drawing a blank on exactly what its called, but its supposed to insulate everything. if this is the problem and i would probably do it anyways just to be safe replace all the wires " parts that hang off the ignition coil " they arnt that expensive and make sure to put that stuff on them just ask your local parts store for the stuff you put on the plug wires for a coil ignition they will know what your talking about. wish the best of luck to you. my guess is this will fix your problem, however i havnt heard or seen your car and all i can do is guess.
3D RC Heli Pilot
Gotta appreciate the searching...but look at the date...
Member
How did he even find that post?
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