well ive been trying to pass echeck sences september. 5 drive cycles later I have 2 readiness monitors that keep saying there incomplete, evap and rear o2 monitors with the drive cycle im on now ive driven 120 miles with speeds as high as 70mph and as low as 25 mph with 3min periods of idling every so offen. im pretty sure my rear o2 is crap and i have no idea about my evap system, i had to block off my purge solenoid cuz it started leaking and pushing boost into the gas tank , so evap could be anything.

My cobalts is a 2.2l lt that ive put a turbo on and trifecta tuned, it runs like a champ. So my point is im getting rly sick of these drive cycle, what can i do with trifecta and most likely replacing parts to get this car to pass

sorry for any bad spelling

 

Can you just replace the purge solenoid? Or does your setup prevent it? I got mine at Oreillys for 12 bucks with a lifetime warranty.

Downstream O2 sensor should not be too expensive either. It won't always throw a check engine light if its not working properly.

 

Had similar issues in Mass. I had a CEL due to my AFR being off. I have a ZZP downpipe and exhaust with a high flow cat. If you buy a cable (Trifecta sells them for $200, you can find the same cable off ebay for $10 shipped, just buy a OBDII to USB cable), download the software from trifecta, and get the file from trifecta with your tune. When you get all that, you can disable DTC's. There is a complete guide on how to do it on Trifecta's site. I'm guessing the inspection place is plugging into your OBDII port to get an emissions reading?

If this is the case you can disable the DTC codes that relate to emissions, so the guy giving the inspection will get a pass on his computer. They may be able to tell that something is off, but just play dumb. There is nothing they can do if the computer tells them it is a pass. Hope this helps. Nothing I hate more than having to deal with bullshit inspections.

 

This.
Disable the DTC codes.

 

thanks for the quick reply. i can replace the purge solenoid but do you think it would throw a code for evap leak with it and the line to the tank caped off? the rear o2 has given me 4 codes but is there any way to just delete it through trifeca? im going to take the cat back off anyway

 

Don't even bother with hardware. Honestly if you want to guarantee zero problems, disable all of your DTC's. You will never throw a CEL and every code will be blocked. There is no way any code that would cause you to fail would make it to the person giving the inspection. I would revert back and re-enable the codes after the inspection because you could be running on 3 cylinders and you would not throw a CEL.....

 

thanks for the fast replys ya its through the obd2 port, we also have self check stations here. i keep my cable and have all the tunes on my wifes labtop

 

Just edit the tune

 

You can figure out which specific codes you need to disable, but to just save you the aggravation (so you could get inspected tomorrow) just disable them all. If you go through the list of codes you can probably figure out which ones you are throwing. With trifecta's software you can scan the car to see which ones you are throwing, and disable them.

 

exactly.

and sounds like the OP should just pick those code, disable, and leave it be.

 

thats what ive been doing but it will throw a diffrent code for the same thing (rear o2)
that why ive done so many drive cycles. ill probly disable the dtc's and get it check

 

disable that too.

 

lol

 

There are only a few of them, the game ends quick lol

 

ill go through the dtc list in trifecta tonight disable what i need, but is there a way with out doing another drive cycle like disabling readiness monitors

 

lol you will still be screwed i bet.

 

We never had them in Cincinnati, Ohio. All the LSx cars would have been screwed lol

 

We did up until around 2005 or so.

SW Ohio FTW!!!

 

ya screw NE Ohio im going to move down there lol

 

E-Check is only in 7 counties in ohio. They are all around Cleveland. The reason being is that levels of smog and ish are higher there, though its not because of the cars lol. I worked for E-Check for a short time. Terrible job.

 

i live in lorain county the farthest county west of Cleveland that requires it. Back in 05 I think, they rechecked the atmosphere and it was said we no longer need echeck but the county still keep the program in place which there losing money on it, with it being free now. The reason we had it here in lorain county was because of the steel mills in city of lorian but we no longer have them anymore.

 

Emissions tests are pointless. Here diesels are exempt. Makes no sense.

 

Ohio too. Lol

 

i when through last night and disabled all the DTC that i need but heres another question i have 2 permenate DTC in the system if i have them both disabled will the system think there "fixed", im guessing yes. the more i learn about the newer obd2 the more i wana slap who ever though of it in the face lol

 

anyone?