[rxnodoze02]

I just installed headers on the 6.1 this week and now I’m starting to throw codes. P0153 and 1333. I used the o2 extensions from jegs which I hear could be the problem. I also made sure they were plug into the right o2 wires from the car. I guess what I really want to know is if the o2 sensors are specific. Do the front o2 have a different part number then the rear o2 bc I could have placed the wrong o2 hole. I would also like to shut off my rear o2 in the car with the Diablo. Can anyone tell me where this feature is located when you install the tune? Is the option available in the "modify tune”? I do have the old version on the Diablo bc I heard the new Diablo’s do not give you the option to turn the rear o2 off.
Thanks chris

 

[gerd35]

are you running a canned tune or a custom tune?

 

[rxnodoze02]

The 93octane w/cai tune from diablo.

 

[philthyphil]

The 93octane w/cai tune from diablo.

You need the 9r12 crom file on your predator. If you go into the menu, you should be able to tell which crom file you have on yours. Otherwise you are gonna need a cmr tune to have the rear o2's turned off.

 

[rxnodoze02]

That is the crom i have. Where is the option to turn off the rear o2s. Thanks

 

[philthyphil]

That is the crom i have. Where is the option to turn off the rear o2s. Thanks

You have to go into modify tune and then go to o2 sensors and o2 heaters and disable the rears

 

[rxnodoze02]

Ok shut rear o2 sensors and the rear heaters. Thank you

 

[1621]

I just installed headers on the 6.1 this week and now I’m starting to throw codes. P0153 and 1333. I used the o2 extensions from jegs which I hear could be the problem. I also made sure they were plug into the right o2 wires from the car. I guess what I really want to know is if the o2 sensors are specific. Do the front o2 have a different part number then the rear o2 bc I could have placed the wrong o2 hole. I would also like to shut off my rear o2 in the car with the Diablo. Can anyone tell me where this feature is located when you install the tune? Is the option available in the "modify tune”? I do have the old version on the Diablo bc I heard the new Diablo’s do not give you the option to turn the rear o2 off.
Thanks chris

front and rear sensors are all the same part#.

P0153 / p0133 are primary o2 sensor codes, and are common for headers. they have a negative effect on closed loop motor operation. not sure whether the jegs o2 sensor extensions could be what's responsible for the front o2's setting codes. i have the same codes with my kooks headers, and they did the install for me as well - not sure which extensions they used.

what year is your jeep? what brand of headers did you get?

 

[philthyphil]

front and rear sensors are all the same part#.

P0153 / p0133 are primary o2 sensor codes, and are common for headers. they have a negative effect on closed loop motor operation. not sure whether the jegs o2 sensor extensions could be what's responsible for the front o2's setting codes. i have the same codes with my kooks headers, and they did the install for me as well - not sure which extensions they used.

what year is your jeep? what brand of headers did you get?

That is incorrect. On 2006's the front and rear o2's are different part numbers. So if you have an 06 you might want to switch the o2 sensors and see if that clears up the codes. On 2007 and later they are all the same part number.

 

[rxnodoze02]

I have an 07

 

[1621]

I have an 07

i have an 07 too and got the same codes after installing kooks long tube headers. good luck getting rid of P0153 / P0133 and getting the rear o2 sensors ready to pass emissions - i haven't been able to pass in the 3 years since getting headers.

 

[rxnodoze02]

How has your car been running? Do you have problems? Bc my car runs like dog doo right now since those codes have been on. Im going to relocate the o2 sensor this seems to be the best solution to the problem. Let me know how you have been dealing with this problem and I also fill you in on how this o2 relocation goes. The o2 may have to go into one of the primary's. It will only be reading the af for one cylinder but it may fix the problems.
Thanks

 

[1621]

mine runs ok. the exhaust tips do seem to get black faster, so it's possible that i'm running a bit rich and not getting ideal fuel injection in closed loop due to the codes. but my #1 concern is not being able to pass emissions. relocating the primary sensors upstream seems like it might work. even though it will only be keying off one cylinder, it may get hotter, and may react faster.

i'm subscribing to this thread, report back on what you find!