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5 Series DIY
Knowledge Is Power! ~ The place for do-it-yourself threads on a variety of topics. Start a thread describing a particular job (oil change, cooling system overhaul, brakes, shocks and springs, etc.) or search for one you need help with!

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  #1  
Old 05-23-2012, 07:56 PM
Brandylee Brandylee is offline
Brandylee
Location: Rock springs wyo
 
Join Date: May 2012
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Mein Auto: BMW 530I
2005 530i

Driving home today check engine light comes on so I go have code read they said engine running to lean?? Any answers as to why? Would it be an O2 censor or maybe need to change fuel filter? Cleaned the max air flow sensor still no change...
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Old 05-24-2012, 07:14 PM
Axialflow Axialflow is offline
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Location: VA
 
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Mein Auto: 525i 02
im guessing it was P0171 System too lean (Bank 1)? First thing i would do is look for a vacume leak. You can do this by spraying carburetor cleaner around your vacume lines, any increase in RPM would indicae a vac leak. There are other possible causes but this is a good place to start. Is the car running rough? Did they clear the codes after reading them?
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Old 05-24-2012, 08:30 PM
Brandylee Brandylee is offline
Brandylee
Location: Rock springs wyo
 
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Mein Auto: BMW 530I
Thanks for the reply I'll definantly start there this weekend!!
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