O2 sensor problems
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O2 sensor problems
i have a 1990 toyota pickup reg.cab 5 speed 22re motor my check engine light came on and it started to idlea very rough and sometimes stall out allong with poorgas milage 8 MPG. it turned out to be because of my O2 sensor i unpluged it and my truck ran like normal except for very poor gas milage 11 mpg. when i got the truck a few weeks ago it was getting around 17 or 18MPG.so i installed a new O2 sensor and when i pluged it back in it started right away with rough idle and really bad gas milage. any ideas of what it could be?
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