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Old 12-28-2012, 04:23 PM   #1
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Advice on resetting check engine light

Hey guysIve procrastinated in getting my check engine light dealt with. Today I replaced the o2 sensor that was supposedly causing my problem. Should I unplug the battery to reset the code? Wondering because I have emissions due on monday the 31st.

With the drive cycle completely reset Im not sure I will be able to have it ready by monday for emissions. If I dont reset the light will the current drive cycle be saved and just recheck the o2 sensor portion so I can avoid going to emissions and them telling me its not ready to be checked because it was cleared recently?

If I go end up going to emissions and there isnt a complete drive cycle will they fail me and give me an extension on my emissions/reg?

Anyhow Ive backed myself into a corner

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Old 12-28-2012, 05:00 PM   #2
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Hey Bob, had to play this game myself, after you disconnect the battery to reset, you have to drive about 75 miles for it to register all of the info the smog check will need, know this from experience... rock on bro

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Old 12-28-2012, 05:40 PM   #3
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Hey Bob, had to play this game myself, after you disconnect the battery to reset, you have to drive about 75 miles for it to register all of the info the smog check will need, know this from experience... rock on bro
Thanks mwash! I just found a good answer on how to check this as well

Quote:
The ECU will tell you if it is ready to pass by a key-on test. Just turn the key to the run position, without starting. After about 15 seconds, the trouble light will flash for about 10 seconds, then stop. This indicates the vehicle has not had enough "happy" trips, and will not pass the test. When the light does not flash, it is ready to go to be tested and should be able to pass.
Tried it with no flashing then did the disconnect and got the flashing .. so after driving the 75 or so i guess ill check it again, hopefully it resets before monday.
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Old 12-28-2012, 05:45 PM   #4
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Originally Posted by bobjenkins View Post
Thanks mwash! I just found a good answer on how to check this as well



Tried it with no flashing then did the disconnect and got the flashing .. so after driving the 75 or so i guess ill check it again, hopefully it resets before monday.

good info thanks for posting this
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Old 01-02-2013, 07:14 PM   #5
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well if anyone wondering I ended up having to do 4 drive cycles this weekend , I just went and did what was on the sheet it took about 40 miles each time to complete all the OBDii tests to get ready for emissions
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Old 01-03-2013, 08:09 PM   #6
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driving in all wheel drive on dry payvement,does it hurt the engine?
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Old 01-03-2013, 08:46 PM   #7
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Quote:
Originally Posted by jeannie
driving in all wheel drive on dry payvement,does it hurt the engine?


The wrangler is not "all wheel drive"
Part time and you CAN do harm driving/Turning on dry pavement.
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Old 01-05-2013, 12:28 AM   #8
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Originally Posted by kjeeper10 View Post
The wrangler is not "all wheel drive"
Part time and you CAN do harm driving/Turning on dry pavement.
I would say u can do harm on wet pavement too
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Old 01-05-2013, 08:10 AM   #9
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driving in all wheel drive on dry payvement,does it hurt the engine?
Jeannie, the best advice on "when" to engage the 4WD system is this: Use it when you NEED it. Otherwise, leave it off. If there are frequent patches of snow/ice and you feel more comfy running in 4WD, then by all means use it. But Jeep doesn't suggest that you run it for long periods of time on pavement when conditions aren't calling for it.

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