Quote:
Originally Posted by 2000mc
jinx
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Lol
Quote:
Originally Posted by Eddie25
how would the O2 sensor effect FE? my engine light has been on for a while now needing the left bank o2 to be changed however I am still getting very good millage so im not in too much of a rush to replace it
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The primary O2 controls A/F ratios, the secondary just measures catalytic converter efficiency on most cars. Your check engine light is probably just the "cat inefficiency" code telling you the sensor or the cat is not up to par. Either way it won't effect the way the engine runs. Front O2 would probably only cause a rich or lean cod which would impact FE. .
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2007 Ford Focus ZX5 - 91k - SGII, pending upper and lower grill bocks - auto trans
1987 Monte Carlo SS - 5.3/4L80E swap - 13.67 @ 106
2007 Ford Focus Estate - 230k - 33mpg - Retired 4/2018
1995 Saturn SL2 - 256K miles - 44mpg - Retired 9/2014
Cost to Operate Spreadsheet for "The New Focus"
