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Discussion Starter · #1 ·
After being pulled over for an expired inspection sticker, I took my TJ to the shop to get it inspected. It is an 05 that I have owned for 5 years and it has passed every year. It failed this year, for emissions reasons (picture of report attached). The Jeep is a 2005, 4.0L 6 speed manual X model.

Additionally, lately it has been idling rough, and feels like it is going to stall sometimes when I am shifting gears (even up into 4th-5th gears) which never used to happed. There is also a loud grinding/almost shrieking noise when I start it up about 1/8 times.

The mechanic told me that if I drive it 60 miles at a constant speed, let it cool down, then drive it 60 more miles at constant speed that it should reset the O2 sensor and that should fix my problems...sounds too good to be true to I thought I would share all of this info with y'all and see if anyone on the forum could offer any suggestions as I need to get it road-legal very soon as it is my DD.

Thanks,
Eli
 

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Jeep extended the warranty to lifetime for 05-06 TJ emissions monitors not ready to pass emissions

They will fix it for you for free


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Discussion Starter · #3 ·
Jeep extended the warranty to lifetime for 05-06 TJ emissions monitors not ready to pass emissions

They will fix it for you for free


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Seriously? If I take it to any Jeep dealership they will fix it for free?

That is awesome news!
 

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My 05 4.0 manual had a similar issue. It would bog down or cut off and back on at random moments. Starting to move at a light, going 60mph on interstate. It did it for 5-10 seconds every 30-100 miles, randomly. I think the pcm was resetting at that times and that's why I couldn't pass emissions. I ended up getting a new rebuilt one from Wranglerfix.com ($500+) and haven't had any issues in 200 miles and passed emissions. Not sure if that is your issue, but just a idea.
 

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I am surprised Texas is that strict on inspection of older vehicles!

In Massachusetts, where everything is tightly regulated, we only have to do safety inspection after the vehicle becomes 15 years old. It can fail general inspection if blowing blue smoke/burning oil, but other than that... Just need to pass the safety stuff. I am free from smog testing either this February or next, depending on whether they go by model year or actual assembly date.
 

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It is not a state wide policy anywhere but californication

Elsewhere it is based on epa air test history what emission testing is mandated

In NM only the county with the biggest city has mandatory emissions testing
There all cars not yet 35 years old get testing
Annually if made before 86 and every 2 years for everyone else in that county

It matters not that some of that one county is across a 5000 ft mountain from the city or that an adjacent county has a city that overlaps the same metro area just matters which county your registration is in
If in that county have to have emissions cert to go with registration application unless 34 years old so now my 1983 280zx turbo is finally exempt but the 1991 YJ is not exempt





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I did this fix myself & I was able to pass emmissions.
It's a pretty siple fix. I didn't want to sit at the dealership drinking stale coffee for hrs.
 
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