All three failed at once nearly 3 years ago. At about that same time, I began getting a check engine light for the O2 sensor after the catalytic converter. I believe all problems are related since I changed the O2 sensor and the fault light stayed on. Within the last year the trans started shifting poorly and got progressively worse. I changed the Transmission Speed Sensors and that fixed the shifting problems but not the other issues.
Take it to advance auto have them hook up analyzer to check for fault codes and go from there---you may have an ECM issue or short/loose wire somewhere and/or have you changed anything electrically--if not match to system---will drive ECM nuts--exe some radios are part of the functioning ECM and if these are replaced with after market or unmatched factory issue---problems will arise
SOURCE: I CHANGED MY SPEED SENSORS AND THEN MY SPEEDOMETER
dear friend it is not clear what your problem is but that model has a mechanical clock and works with a cable
SOURCE: catalytic converter or oxygen sensors?
i would replace the oxygen sensor first as it is the cheapest and easiest
SOURCE: I have a Hyundai Tiburon
could be a wire issue with the o2 sensor, because you hit something.
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