emissions help
emissions help i just went to get my emissions done...No Dtc's....i didnt pass because the System Readiness test [EPA] was not ready....I hooked up efi live....i had no dtcs but i clicked the clear code...cleared....then drove the car around for 2 hours...still the same problem...anyone know if its a bad pcm?? or something else?
Last edited by SheaMus; Jun 10, 2008 at 03:13 PM.
Yo Shea,shoulda ask fran.He would of told ya what the problem is.You have to have some many start/stop cycles for the codes to disappear.It's like 10/20 cycles. Do that and go get the car done it'll pass then.
Did you happen to disconnect your battery before you went for the test. That will make the tests run again.
Here is the test cycle:
http://www.obdii.com/drivecycle.html
And this sticky also has some good info:
https://ls1tech.com/forums/pcm-diagnostics-tuning/287094-read-me-first-tuning-docs-ve-maf-ses-lights-faqs-more-01-31-07-a.html
Here is the test cycle:
http://www.obdii.com/drivecycle.html
And this sticky also has some good info:
https://ls1tech.com/forums/pcm-diagnostics-tuning/287094-read-me-first-tuning-docs-ve-maf-ses-lights-faqs-more-01-31-07-a.html
When it shows your not ready, you havent drove enough cycles. I would do multiple drives AND have the car turn on and off quite a few times.
TO give you an example, with a aftermarket tune and a lumpy cam.
The computer has a updated tune based on the place that does it, but the driveability stuff takes time to be made. Like I would have the atypical hanging idle when driving and when I come to a stop, it drops.
It took over 10 drives and for at least the car to hit closed loop for it to cease happening.
Think of the readiness test like that, the PCM needs so many drive cycles to set.
TO give you an example, with a aftermarket tune and a lumpy cam.
The computer has a updated tune based on the place that does it, but the driveability stuff takes time to be made. Like I would have the atypical hanging idle when driving and when I come to a stop, it drops.
It took over 10 drives and for at least the car to hit closed loop for it to cease happening.
Think of the readiness test like that, the PCM needs so many drive cycles to set.
Forget driving it around,won't help.
Delete every code for the 02's and EVAP system.Then it will pass 5 minutes later.Also EFI live has a emmisions ready test. I bet your car failed 02 and EVAP readiness.
Delete every code for the 02's and EVAP system.Then it will pass 5 minutes later.Also EFI live has a emmisions ready test. I bet your car failed 02 and EVAP readiness.
IF he can just tune all the rest of the **** out, thats great but thats up to him or his tuner to do so.
At least he is lucky, in CT if he doesnt past the PCM test, he HAS to pass on a emission roller.
Trending Topics
Unless there is something funky in the tune, it will help to drive, or more to the point get the cycles in.
IF he can just tune all the rest of the **** out, thats great but thats up to him or his tuner to do so.
At least he is lucky, in CT if he doesnt past the PCM test, he HAS to pass on a emission roller.
IF he can just tune all the rest of the **** out, thats great but thats up to him or his tuner to do so.
At least he is lucky, in CT if he doesnt past the PCM test, he HAS to pass on a emission roller.
Cycles mean absolutely nothing if you have EFI live.It will pass 5 minutes after you download a tune. I didn't read anything about how the car drives--- just how to pass the test.
Believe me,I've been through this a hell of alot more times than you have.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo So an FYI for everyone else if you dont have EFIlive, or access to a tuner whom you can pay to have it done then do what I say. BUT if there is a SES/Emissions/DTC issue, then it needs to be solved before going back.
Last edited by BlackScreaminMachine; Jun 12, 2008 at 07:54 AM. Reason: clarification
I drove and did cycles all day...on and off...up above 55 then left off the gas and let it roll down...put efi live back on...02's and evap passed...just saying that EPA readiness test isnt ready...its wierd...i saved my tune...and downloaded the stock tune off of efi live and just flashed it back to stock...iam gonna change the speedo for the rear and go take it for a ride again...hopefully it was something that was put in the pcm...thanks for the feedback guys...ill write up and let u guys know what happens
I drove and did cycles all day...on and off...up above 55 then left off the gas and let it roll down...put efi live back on...02's and evap passed...just saying that EPA readiness test isnt ready...its wierd...i saved my tune...and downloaded the stock tune off of efi live and just flashed it back to stock...iam gonna change the speedo for the rear and go take it for a ride again...hopefully it was something that was put in the pcm...thanks for the feedback guys...ill write up and let u guys know what happens
Just read my post again. They will never- ever be ready! Delete what I said and it WILL pass.
He's not kidding around it certainly works! Just listen to Slowhawk, he knows what he's talking about! Had this done last month and the car passed when I took it about 35 minutes later, when I got to the service station!
guys thanks for the help...slowhawk...i did everything u said...removed everything...i still have on more prob...the secondary air system still showing not ready.....Can i remove the codes for both air systems also??? and do you recommend turning everything back on after i get my emmissions passed?
guys thanks for the help...slowhawk...i did everything u said...removed everything...i still have on more prob...the secondary air system still showing not ready.....Can i remove the codes for both air systems also??? and do you recommend turning everything back on after i get my emmissions passed?
Yes,delete all of the AIR system codes.Most cars we get rid of the AIR system anyways.
