Smog check fail and ac quit !

[Rocket Man]

It’s easy here in Iowa. Find a country road on a Sunday and slow down like all the farmers who are out looking at everyone else’s corn fields and doing 20 mph so they can get a good look.

Oh there’s places here to do that too, out in the country. My issue is that, at least from my understanding, is this needs to be done within a short time of doing the rest of the drive cycle. The instructions say to let it idle after a cold start 2 1/2 minutes with the AC and rear defrost on, then immediately accelerate to 55, then coast to 20, etc. I did try completing a drive cycle on my 08 Silverado several times but never succeeded. I couldn’t get one of the sensors to complete, I don’t remember which one. I figured I’d have to go sleep in the truck out in the countryside. So instead I registered it in a county that doesn’t require a smog check.

 

[PG01]

Oh there’s places here to do that too, out in the country. My issue is that, at least from my understanding, is this needs to be done within a short time of doing the rest of the drive cycle. The instructions say to let it idle after a cold start 2 1/2 minutes with the AC and rear defrost on, then immediately accelerate to 55, then coast to 20, etc. I did try completing a drive cycle on my 08 Silverado several times but never succeeded. I couldn’t get one of the sensors to complete, I don’t remember which one. I figured I’d have to go sleep in the truck out in the countryside. So instead I registered it in a county that doesn’t require a smog check.

That fuggin evap takes forever....

 

[George B]

That fuggin evap takes forever....

Makes it worth having a scan tool that can command the test.

 

[Rocket Man]

Makes it worth having a scan tool that can command the test.

I have a Tech2. The Evap states “not ready” if the drive cycle is incomplete. There’s nothing you can do. It won’t test if it’s not ready. Ugh.

 

[Doubeleive]

Ya doing the evap test with the tech2 is a chore, temp has to be right, you have to time the ignition and buttons just right, then you have to hold the rpm's just right. and if you screw up you have to start all over.
for someone like me I need a external throttle control like you used to be able to use with your hand
the smog tech here in california told me just go drive it 50 miles at 55mph which worked but you dam near get ran off the road because nobody drives 55 here not even the semi's even though there supposed to

 

[George B]

I have a Tech2. The Evap states “not ready” if the drive cycle is incomplete. There’s nothing you can do. It won’t test if it’s not ready. Ugh.

I stand corrected. Good to know.

 

[Scottydoggs]

i own a hptuners, once in my old car i failed cause stuff was not ready yet. so i drove the mile home, deleted all the codes and passed with flying colors. got home and undeleted them.

 

[Tonyrodz]

i own a hptuners, once in my old car i failed cause stuff was not ready yet. so i drove the mile home, deleted all the codes and passed with flying colors. got home and undeleted them.

Strange that it worked Scotty. I used to do inspections at Eatontown and people would clear their codes before coming. They'd always fail because the sensors weren't ready yet.

 

[Rocket Man]

i own a hptuners, once in my old car i failed cause stuff was not ready yet. so i drove the mile home, deleted all the codes and passed with flying colors. got home and undeleted them.

Strange that it worked Scotty. I used to do inspections at Eatontown and people would clear their codes before coming. They'd always fail because the sensors weren't ready yet.

Yeah that’s not right @Scottydoggs there’s no way to pass emissions after deleting any emissions related DTC’s without a drive cycle, and all the sensors have to report as “ready” with no codes present, which takes a drive cycle or several. It’s set up like that expressly so people can’t just clear codes and then drive through emissions testing.

 

[Scottydoggs]

Yeah that’s not right @Scottydoggs there’s no way to pass emissions after deleting any emissions related DTC’s without a drive cycle, and all the sensors have to report as “ready” with no codes present, which takes a drive cycle or several. It’s set up like that expressly so people can’t just clear codes and then drive through emissions testing.

you would be dead wrong there. my regal had 25 codes deleted, egr, evap cat, rear o2. the only thing left was the up stream o2. that you want to know is going bad via the code. once deleted and set to no report all them tests for those items are set to ready as soon as you flash it. NO DRIVE CYCLE NEEDED.

my thaoe has a rear o2 deleted cause it went bad and it passed inspection just like the regal did for 10 years.

this is fully check able with a scanner that shows "im readyness"

the tune in my camaro also has a ton of codes deleted, evap is one of em.

now theres perma codes in newer cars and trucks 16 or 17 up, that cant be deleted if they set the light. they need to pass their tests so the perma code goes away, then delete it to kill it.