O2 Sensor
#1
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Year: 2001
Model: Cherokee
Engine: 4.0
O2 Sensor
So my mpg has dropped to about 10mpg all town driving in a stock 01 XJ AW4. My scangauge does not read sensor function so I am just going to replace the upstream O2 sensor. My question is does anyone have a recommendation as to a brand? Or can I just pick up any one from NAPA/AutoZone/.........all being equal. I have seen prices vary from about $40-$62. I was just looking for some input, any would be appreciated. (I usually just shop at NAPA)
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Year: 1999
Model: Cherokee
Engine: 4.0
So my mpg has dropped to about 10mpg all town driving in a stock 01 XJ AW4. My scangauge does not read sensor function so I am just going to replace the upstream O2 sensor. My question is does anyone have a recommendation as to a brand? Or can I just pick up any one from NAPA/AutoZone/.........all being equal. I have seen prices vary from about $40-$62. I was just looking for some input, any would be appreciated. (I usually just shop at NAPA)
The after CAT sensor does play a roll in gas mileage in that it's input to the PCM is compared to the before CAT sensor(s) where a goal air/fuel mixture is set by the PCM to adjust the fuel injectors dwell. A scanner that can display live O2S functions would be to your advantage so you can see if the O2S's are functioning properly.
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