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is there a problem with my O2 sensor?

347 views 0 replies 1 participant last post by  rockislife04 
#1 ·
I have noticed for the past several months that i have been getting pretty ****ty gas mileage. I wasnt tripping the CEL and started to think else where. I ran a scan with a OBD 2 scanner and came up with these results.All of these results are at idle btw.

O2 sensor 1 - voltage fluxuates from .8 to .075 vlots and then .130 and .685 in there as well
O2 sensor 2 - voltage fluxuates from .420 .480 .475
Ignition advance - 7-7.5*
MAF FLow - 3.67-3.46
Calc load - 3.5

Do any of the items i have just posted effect the gas mileage more than others? I have 1 O2 sensor and will replace one if it is faulty but do not want to just guess and have to do it twice. Any help would be greatly appreciated. Also in the last year i have changed the fuel filter, timing belt, oil, spark plug wires, and other lil odds and ends. please let me know
 
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