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      12-17-2013, 03:40 PM   #17
dbs600
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Drives: 2011 750LXi Individual
Join Date: Apr 2010
Location: New York, NY

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Quote:
Originally Posted by JNoSol View Post
Absolutely. O2 sensor helps the computer determine the right air and fuel mixture. When it goes bad, it is not sending the right voltage to the computer causing an incorrect air/fuel mixtures. This could mean a rich/lean fuel/air mixture = worst fuel econ, fouled spark plugs, carbon build up, fouled CAT convertor.

A bad O2 sensor doesn't damage the air filter.

You can have your dealer check them. There's a way for them to check the voltage output on them.
Thank you very much for this most detailed insight!

Last edited by dbs600; 12-24-2013 at 09:54 PM..
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