Originally Posted by whowey
There is no triggerable emissions light on an 89....
It is set off by a timer under the dash. Pull the timer.. the light will never come on again. If you look under the dash towards the heater controls, it is a smoked plastic box with white gears inside. Unplug it.. you are done.
It is there as a "reminder" to check your emissions equipment (Oxygen sensor, EGR, etc) since there is no CEL in a renix cherokee...