The "Check Engine" light is trying to tell you that something is wrong with the engine control system.Reindeer said:Forgive me if this is a FAQ, but I would like to find a way to turn this annoying light off. It's bugging me.
I have some electrical tape covering it.
I don't want to take it to a dealership. It's not worth the trouble.
Thanks.
AZ Jeff said:The "Check Engine" light is trying to tell you that something is wrong with the engine control system.
Eagle said:On the Renix (87 - 90) models there is a light that comes on at 75,000 to 80,000 miles as a reminder to change the O2 sensor. But it doesn't say "Check Engine" it says "Maintenance Required."
AZ Jeff said:The "Check Engine" light is trying to tell you that something is wrong with the engine control system.
The fault may be minor, or it may be major, and only a code reader (as posted by others) will tell you for sure. (I suspect whatever is wrong is minor, or you would be writing us about how your XJ is running crappy as well as having the check engine light on.)
If you DON'T address whatever is wrong, it's bound to get WORSE and then you WILL be writing us about how your XJ is running crappy (or maybe not running at all.)
The check engine light is not there to fill up space on the instrument panel.
summitlt said:Its not OBDI, jeeps dont have that. Its theyre own renix system. the light wont go off until the timer is reset.
Eagle--I had a '92, and it had TWO LIGHTS.Eagle said:On the Renix (87 - 90) models there is a light that comes on at 75,000 to 80,000 miles as a reminder to change the O2 sensor. But it doesn't say "Check Engine" it says "Maintenance Required."
I'm not sure on the '92. Does it have both the "Check Engine" light connected to the on-board diagnostics and the 80,000 mile O2 sensor reminder light?
Thank you, Jeff.AZ Jeff said:Eagle--I had a '92, and it had TWO LIGHTS.
"Check engine"--this was the one that tells you that something is wrong with the control system, and functions basically the same for OBD-1 and OBD-II. (How you read codes, of course, varies between those two control schemes.)
"Maintenance Required"--this light was present on all OBD-I models, and is tied to mileage registered by the ECU. When the vehicle reaches 82,500 miles, the light comes on. It means that the O2 sensor is supposed to be changed (whether this is actually needed is NOT indicated by this lite). The only way this maint. req'd lite can be turned off is by using the Chryco proprietary DRB scanner. I just took the bulb out of the dash on mine to prevent it glowing forever.
So, on a 1992, ignoring the "check engine" lite is not a wise move.
AZ Jeff said:"Maintenance Required"--this light was present on all OBD-I models, and is tied to mileage registered by the ECU. When the vehicle reaches 82,500 miles, the light comes on. It means that the O2 sensor is supposed to be changed (whether this is actually needed is NOT indicated by this lite). The only way this maint. req'd lite can be turned off is by using the Chryco proprietary DRB scanner. I just took the bulb out of the dash on mine to prevent it glowing forever.
Eagle said:If you are still on the original oxygen sensor at 108,000 miles, it is highly unlikely that it is "working fine." Your Jeep may be running, but I'll bet it's not running as well, as smoothly, or as economically as it could/should.