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Old 08-17-2012, 06:55 AM   #7
OEM ///Member
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 23,212
My Ride: 330CiC, M5, X5, E93
CCV lower oil return hose that connects to the dipstick tube base is also a big problem and is very often overlooked as it is hard to locate.

Grab the hose at the base of the dipstick and follow it back to the bottom of the CCV, if soft, covered with oil or torn/collapsed, it needs to be changed. A very common problem with lean codes along with any other crankcase air leak.
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, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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

Lower hose temp switch O-ring - BMW #13621743299
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