Emiss Maint indicator

[IDXJ]

My EMISS MAINT indicator light just came on in my 88 MJ. Any hazard a guess where to begin checking for issues? Thanks

[fatcat0491]

new o2 sensor?

[HOrnbrod]

I don't know what year you have, but the Renix models have a timer which activates the emissions maintainance indicator light at around 80K miles or so. It's a reminder to change out the O2 sensor. You can just unplug the timer. The timer is under the dash to the right of the steering column. On the HOs it's controlled by the ECU, no timer. I just removed the indicator light from the cluster on mine.

[Oizarod115]

probably wouldn't hurt to change the o2 sensor based on age and whatnot but the light is just automatic, no diagnostics to it so it has no relevance on whether your o2 sensor or anything else is malfunctioning.

[IDXJ]

Thanks guys. I did find that same info in my manual too.