Hi,
My 00 Camry had engine check light on two weeks ago. My dealer said it was an air-fuel ratio sensor problem. The engine was very smooth even with the bad sensor. However, after I replaced it with an O2 sensor with universal type of connector, the car became a little jumpy during acceleration. And the idle speed varies a lot. The symptoms immediately disappear if I disconnect the new sensor. Is it just an O2 sensor problem, or something else? Please help me out!