Let's talk O2s and emission testing

[tigerhonaker]

I have done the emissions tune and the drive cycle and it still failed. I have the 2nd foulers from brenspeed coming. Hope that works.

That may just be what you need.
I have them and before I installed them I had CEL coming on like every 500-600 miles.
Installed the 2nd set and no CEL since.
But have NOT went through emissions yet so ...........
I think it is worth a try.


tigerhonaker

 

[TexasBlownV8]

I have done the emissions tune and the drive cycle and it still failed. I have the 2nd foulers from brenspeed coming. Hope that works.

But you still haven't said EXACTLY WHY it failed?

 

[Sini5ter08]

P0420 and P0430. I have 2.6, lt and hi-flo cats Just like you. If there are a lot of ways then why don't you list some ways..

 

[TexasBlownV8]

How many times do you drive after clearing the codes (how many drive cycles)?

If you clear the codes, drive the car one drive cycle (varying speeds, 30, 40,50, 60 mph for 10-20 minuted, let the car sit overnight, then drive the next day to get it inspected, without stopping anywhere, it'll probably pass. Unless you get the DTCs come on before the 3rd-4th driving cycle.
I went through that exact same process two times to get the car to pass, as it would throw one or both of those codes eventually, but not for 2-4 driving cycles.

If, however , you get them to come up right away, then you do have to do something first.
The circuit modification should solve your issue, as well as the mentioned spacers.

 

[Sini5ter08]

Yeah i did the drive cycles. Came back to the shop and they said that o2's and catalyst were still reading Not Ready. So i drove about 30 more miles and the CEL came on. You can have 1 not ready. If the second set of foulers don't work i am not sure what else can be done.

 

[TexasBlownV8]

whoa, whoa.... you've got 2 problems.
1) the not readys are due to your tune; THAT's the biggie. You didn't mention that before. THIS requires a tune change for the O2 sensors to get set to ready, and they will with a proper tune, WITHIN ONE DRIVE CYCLE.
2) after the drive cycles, naturally the P0420/P0430 will come on. Those "build-up" a counter value and throw a dtc after a few drive cycles.

Having to deal with 1 allowed not ready is a PITA. But with a proper tune, it can be done.

 

[Sini5ter08]

Tune is set for open loop with the O2's on. You have to complete all driving cycles for everything to get pass the Not Ready status. When that happens the last 2 were the cataylst and O2 and the CEL comes on. Not sure if i am understanding this. I hate this OBDII and new car shit. Wish i had gotten an older mustang. lol

 

[TexasBlownV8]

No, you have 2 issues: the tune, and the high-flow cats causing the 2 codes.
If you're getting O2's not ready I guarantee the rear sensors are not on properly in the tune.
You just have to know how to get around the OBDII stuff, fake it out, etc. Piece of cake.
You've already been given a wiring diagram to use on the rear O2 sensors for how to get rid of the codes. The tune is keeping your O2's in a not-ready state.

I can get pass needing only 1 or 0 not ready's, and that's with all the crazy mods and blower and everything.
But i wont post in this thread anymore; enough said (no snide remarks, SD!)

 

[ixtlan]

Tex is right.
Your tune must have the rear O2's set to on or you wont ever make the not ready go away.
Re contact your tuner and be sure they understand you need them on and you need an emissions tune for your setup.
Even with the Mil Eliminators it needs to be ON.
Don't get discouraged. OBD2 is fantastic once you learn the basics. And Ford has the most advanced and customizable system on the market.
Did you read the Getting Ready thread?
It pretty much is a how too.
And what is needed.

 

[Sini5ter08]

Tex is right.
Your tune must have the rear O2's set to on or you wont ever make the not ready go away.
Re contact your tuner and be sure they understand you need them on and you need an emissions tune for your setup.
Even with the Mil Eliminators it needs to be ON.
Don't get discouraged. OBD2 is fantastic once you learn the basics. And Ford has the most advanced and customizable system on the market.
Did you read the Getting Ready thread?
It pretty much is a how too.
And what is needed.

That's the thing. They are in not ready until i put the miles on then it gives me the cel and spits the code out. The O2's are on. When you hook up the tuner and clear the code everything goes back to Not Ready until you perform the drive cycles.

 

[Ssiptang]

Back from the dead.
I need some help guys.
I'm trying to pass GA emission test.
I just loaded a new tune from BAMA with rear o2 sensors turned on.
I thought I was supposed to get p1000 code so I can clear it thru driving cycle?
I'm not getting any code so I'm not sure if its ready or not.
I'm not even 100% sure if sensors are turned on because I have no way to figure that out. Any way to check if its on?

 

[AutoXRacer]

What is the P1000 code? I have seen that in my PCM memory...something about
OBD-II monitor testing is not complete?

How long is the test? What is required to complete it?
Anyone know what its testing??

 

[dysan]

It is odd but I didn't get a p1000 code either when I did my emission readiness. I wouldn't go by that though...you should really find someone/someplace to scan your obdII emissions readiness status. I believe places like Autozone will do the scan for free.

I am lucky enough to have a friend with a shop and a good snap-on scan tool that I could keep checking with. It took my over 260 miles to get all of the status' cleared and ready, the evap and catalyst took the longest.

 

[Ssiptang]

It is odd but I didn't get a p1000 code either when I did my emission readiness. I wouldn't go by that though...you should really find someone/someplace to scan your obdII emissions readiness status. I believe places like Autozone will do the scan for free.

I am lucky enough to have a friend with a shop and a good snap-on scan tool that I could keep checking with. It took my over 260 miles to get all of the status' cleared and ready, the evap and catalyst took the longest.

Thank for your reply. I thought p1000 would throw a engine light but I found out that it doesn't. I scanned it with my sct and it did have p1000.
As of right now I have o2, evap, cat all not ready. I think there was something else but I can't remember. So would p1000 go away after all of them get cleared?

 

[Ssiptang]

Ok folks i need another help.
P1000 went away but P430(cat efficiency below threshhold B2) came up.
Can I just clear that code before the emission test? Or do i actually need to fix that to pass? Thanks for your help

 

[S197gt07]

If you clear the code it will come up as "not-ready" for the obd2 test.

I would try some non-foulers and see if it clears itself, or get an emissions tune.

 

[Ssiptang]

If you clear the code it will come up as "not-ready" for the obd2 test.

I would try some non-foulers and see if it clears itself, or get an emissions tune.

Thanks for your reply. I didnt know clearing code will throw not ready. I will try non fouler and hope it works..

 

[dysan]

The trick for the cat efficiency is you have to stay very very light throttle and keep the rpms down. You want to produce as little gasses as possible. I basically kept my rpms below 2500 the entire time while I tried to get my cats ready. That was the last item to go ready for me and it took a very long while for that to happen.

 

[Ssiptang]

The trick for the cat efficiency is you have to stay very very light throttle and keep the rpms down. You want to produce as little gasses as possible. I basically kept my rpms below 2500 the entire time while I tried to get my cats ready. That was the last item to go ready for me and it took a very long while for that to happen.

Thats a good point. I will try to keep the rpm down as much as possible tomorrow after installing non fouler. Hopefully it will go away.
One question tho, P0430 is bank 2. Which side is bank 2?
Also, is o2 sensor something that goes bad easily? My car only has 18K miles.

 

[S197gt07]

I think bank 2 is the passanger side, could be 100% wrong. I have a 50/50 chance, so its most likely the opposite of what I think.

O2's should last a lot longer than 18k, but many, many things can lead to them going south. Mine went at 30k for some odd reason.