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General E46 Forum
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Old 08-10-2012, 03:59 PM   #1
cuseman
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Join Date: Aug 2012
Location: syracuse, ny
Posts: 5
My Ride: 325i
Misfires and rough idle.

Hi this is my first time posting. I have used this site for yrs to fix problems with my 325i but I am having no luck this go around so hopefully some one can help. Here's my situation and what i have done so far. I was driving home last week and car was running absolutely fine when i pulled into my neighbor hood. Pushed the clutch in turn on my street and began to give it some gas and it started shaking really badly and hardly no throttle response. I can literally floor the car and it will barely accelerate.

Since then I have parked it and when ever i start it. Idles very rough and sometimes almost stalls out and has even stalled out once or twice just idling. So i replaced the fuel filter with reg. on it and put some fuel cleaner in the gas tank since it was way over due and car got slightly better but nothing crazy.

Ive since had the codes read and i have

p0300 multiple cylinder misfire
p1343
p1345
p1347
p1349
p1351
p1353 cylinder misfire 1-6 with fuel cut off

I have tried unplugging coils one at a time when its at idle and 1 and 6 didn't seem to be running. swapped the coils with other cylinders and stay at the cylinders 1 and 6. so i swapped plugs and still at 1 and 6. swapped injectors and checked fuel rail for clogs. nothing... I have checked both intake boots MAF sensor. Sprayed carb cleaner to check for vac. leaks nothing. Did the bag test for ccv which is fairly new and still nothing. DISA valve is still in take and seems strong. Replaced O2 sensor because i had a damaged wire and checked the o2 relay fuse nothing. Any ideas guys? Very rough idle, can floor it and it barely accelerates , and some times will continuously misfire while driving and seems to only be running on 3-4 cylinders at a time. and if I push the clutch in when im coming to a stop and i dont give it a little gas as it is coming down it will stall out. Any help or ideas would be much appreciated thanx.
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Old 08-11-2012, 12:27 PM   #2
cuseman
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Join Date: Aug 2012
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bump...
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Old 08-11-2012, 12:36 PM   #3
Zchild
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My Ride: 2000 BMW 3XXi ZSP
Have you cleaned your Throttle body and Idle Control Valve, when they get dirty they tend to stick and cause some of the issues you are describing. There are several DIY that include videos with step-by-step instructions. Keep us posted...
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Old 08-11-2012, 01:11 PM   #4
jfoj
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Suggest you check the first 2 links below in my signature for more info.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-11-2012, 03:54 PM   #5
cuseman
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Join Date: Aug 2012
Location: syracuse, ny
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My Ride: 325i
cleaned throttle body and ICV and still no change. the ICV was a little dirty and seemed to pivot better after being cleaned but throttle body seemed fine and was no change. Starting to think possible fuel pump.
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Old 08-12-2012, 02:40 AM   #6
Manawaty
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1st take out the rubber hose which is connected from the throttle valve body and the intake air filter, then run the engine and close by ur hand the throttle body, if the engine turned off so there is no problem with ur intake manifold air vacuum cycle, but if it still running, so may be one vacuum hose need to be fitted again or another.........plz inform me about ur try
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Old 08-12-2012, 06:19 PM   #7
cuseman
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Join Date: Aug 2012
Location: syracuse, ny
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Man i haven't tried your test yet but do any of you guys know the correct psi at the fuel rail? I got my hands a pressure tester so i am going to check that in the next day or two.
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Old 08-12-2012, 07:09 PM   #8
jfoj
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I believe the fuel pressure should be 50 psi. In any event, if you test it, document it so you know what your reading was.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-16-2012, 12:22 PM   #9
cuseman
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Join Date: Aug 2012
Location: syracuse, ny
Posts: 5
My Ride: 325i
Gauge didnt fit my car. Put a new pump in neways and no luck. As soon as this ix fixed its getting sold
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Old 08-17-2012, 01:25 AM   #10
Manawaty
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Let's start my test as I show u above
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Old 08-17-2012, 09:18 AM   #11
2003silver330i
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Could possibly be a bad cam sensor or valve cover gasket leaking oil into one or multiple spark plug alleys. Just some ideas.

Last edited by 2003silver330i; 08-17-2012 at 09:24 AM.
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