MY 1985 TOYOTA CAMRY CHECK ENGINE LIGHT IS ON BUT WHEN I RUN ON THE FREEWAY IT TURNS OFF AND ON. I CONNECT MY SCANNER AND WONT SHOW ME A CODE. WHAT CAN IT BE?
Do you have two O2 sensors? Mine does the same thing. I know it's my O2 sensor on the back side of the engine. If you only have one O2 sensor that is probably your problem. 99% of the time if a toyota has a check engine light, that's the problem.....
Brushes in alt waring out .ck charging system,also clean battery cable ends this will do same let me know
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