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X3 E83 (2004 - 2010)
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Old 05-16-2012, 07:49 PM
barnesnflt barnesnflt is offline
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Location: Ponte Vedra
Join Date: May 2012
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Mein Auto: 2004 BMW X3 3.0
Exclamation Need suggestions on repair

I am receiving the following errors on my 2004 BMW X3 3.0.
P0171, P0174, P0305, and P0313.

I have reset the codes and they return the same errors. We have checked the intake areas for leaks by spraying with carburetor cleaner and no leaks detected. We have removed the oil cap and checked for suction. None noted. We have replaced the spark plugs.

The symptoms are the car idles roughly. When accelerating, the car doesn't seem to accelerate, or stays in same gear, or kinda pulls back almost jerkedly, like driving over a washboard. When you depress accelerator to overcome this, it seems to pull out of it.

Can someone suggest what to try next?
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Old 05-18-2012, 05:23 PM
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fun2drive fun2drive is offline
BMWCCA 149159
Location: Panhandle of Florida
Join Date: Nov 2005
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Mein Auto: 335 vert/14JGC/ 17Outback
Have you checked the cyclone separator also known as a CCV? It is the device under the intake that takes the oil and fumes recycles the oil back through the dip stick and fumes into the engine to be burned. If this is plugged it will cause a lot of issues.
Check you intake, pull the throttle body and look inside with a flash light to see if oil is laying in the bottom.
Best suggest I can provide at the moment...
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Old 05-18-2012, 07:11 PM
Supercourse Supercourse is offline
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Location: British Columbia, Canada
Join Date: Feb 2008
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Mein Auto: 2004 X3 2.5i
Originally Posted by barnesnflt View Post
We have removed the oil cap and checked for suction. None noted.
There's some conflicting opinions out there as to what should be observed when removing the oil filler cap with the engine idling.

This explanation from a 3 series forum makes sense to me:

As you have ruled out an obvious vacuum leak, other than looking for a less obvious one, it does sound as though you might have to go down the oil separator road.
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Old 05-20-2012, 05:08 PM
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mlukas161 mlukas161 is offline
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Location: WNY
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Mein Auto: 03 330i, 04 X3
I would pull out the DISA valve and check that. That threw a code on my x3. Check if the flap is broken and, if it moves freely, it needs replacing.
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Old 05-21-2012, 06:38 AM
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X3-terrestrial X3-terrestrial is offline
Location: N.Miss - Memphis,TN Area
Join Date: Aug 2008
Posts: 2,930
Mein Auto: '05 X3, '02 M3, '91 E30
It's always a good thing to post the car's mileage, gives a better idea on what else could be going on.

I would assume, by the year that has over 100,000 miles. Have you replaced the fuel filter? A clogged filter will cause some hesitation, but I would rule out fuel pump first. (You'll need some equipment to test this) But it sounds to me, looking at the codes and your description, like a fuel starvation issue.

As said above CCV will cause a lot of strange behavior on these cars, but I'd rule out fuel issues first.
"If everything seems under control, you're just not going fast enough"
-Mario Andretti.

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2005 X3 3.0i ZPP, Htd seats, Htd strng, Black Sapphire on Terracotta.
2002 ///M3 Coupe, Steel Gray Metallic on black leather, HK, three pedals.
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Last edited by X3-terrestrial; 05-21-2012 at 06:40 AM.
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