I have this stupid idiot light that is located in the upper left region of the instrument cluster that has been on for a long time. The car has been running fine and performing well. The specific light reads "sensor", but which one out of the millions has gone sour. Does this specific idiot light point to a specific sensor and if so which one is it? If I replace this questionable sensor will the light automatically go out or do I have to do something else? Oh yeah did I forget to mention that this is a 81 ZXT. All help is appreciatied.