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Oxigen sensor change

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Old Aug 27, 2004 | 01:48 PM
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alfonso gomez
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Default Oxigen sensor change

That was very easy. The one I took out was an AC Delco and I suspect it was the factory original . So I put in a new Bosch sensor. I now feel that the milage is worse than before. The MPG readout in the digital dash used to read 13 mpg. Now it is 10 mpg. Anything else needs adjusting after the O2 sensor change? My wallet is running thin, very thin.
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Old Aug 27, 2004 | 01:50 PM
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When was the last time you changed the fuel filter? After changing this on my 93, my fuel economy went up a little.
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Old Aug 27, 2004 | 01:55 PM
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I changed mine a few weeks ago, I used an AC Delco.
I just scewed it in and connected it.
It seemed to run better with the new one.
One thing, I disconnected the battery while installing it, so the ECM can reset. [I don't know if this is necessary but I did it anyway]

Its also an outside chance they gave you the wrong sensor.
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Old Aug 27, 2004 | 02:07 PM
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Nothing needs changing after the O2.
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Old Aug 27, 2004 | 11:01 PM
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Originally Posted by alfonso gomez
That was very easy. The one I took out was an AC Delco and I suspect it was the factory original . So I put in a new Bosch sensor. I now feel that the milage is worse than before. The MPG readout in the digital dash used to read 13 mpg. Now it is 10 mpg. Anything else needs adjusting after the O2 sensor change? My wallet is running thin, very thin.
I played this same game. Replaced my old one with an aftermarket O2 sensor. Started getting intermittent check engine light with O2 codes. I was trying to save some money- I lost. Ended going with an AC O2 sensor- everything all better now. It only cost me about 87.00 total- lesson learned
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