C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Need some help...just failed state inspection.

Thread Tools
 
Search this Thread
 
Old Jul 28, 2003 | 05:53 PM
  #1  
los7883's Avatar
los7883
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Jan 2002
Posts: 3,419
Likes: 0
From: Arlington TX
Default Need some help...just failed state inspection.

I took my car to the Lexus dealership to get my state inspection and it failed. I took it here last year and it passed just fine. This time they said it failed because of the aftermarket exhaust. I talked to several service reps and the tech that did the test and he said that it failed the OBD II O2 test...the test was not performed, the OBD II test could not be started, to my car failed. They said I could take it back within 15 days to get it tested again but I told them what was the point of bringing it back if the problem was with their diagnostics not being able to test the rear O2's? It would be different if it failed the test alltogether...then I can understand...maybe running some RXP through it or something. But if it is a matter of their computer not being able to connect to run the test...how is that my fault. Well after talking to them for a while...it turns out that it MAY be due to the fact that I reset all my codes this morning...and since there was no history for their computer to look at, the test was not run. Their advice was to drive the car for a couple of days and then to take it back so that they can check it again. What do yall think?
Reply
Old Jul 28, 2003 | 06:26 PM
  #2  
USA Muscle's Avatar
USA Muscle
Drifting
 
Joined: Jul 2000
Posts: 1,421
Likes: 0
From: Arlington, Texas
Default Re: Need some help...just failed state inspection. (los7883)

First problem .. you took it to a Lexus dealer - probably didn't know what they were working on !! :p: J/K ! :lol:

If you still have your cats the aftermarket exhaust won't keep it from passing. They're probably right about just driving it around a couple of days and see what happens. :thumbs: Unless the cam is causing the problem - is new since last years inspection ? Most stock LS1 engines can almost pass the EPA inspection without the cats they burn so good ! :thumbs:
Reply
Old Jul 28, 2003 | 07:17 PM
  #3  
allanlaw's Avatar
allanlaw
Le Mans Master
20 Year Member
 
Joined: Sep 1999
Posts: 7,393
Likes: 7
From: Los Angeles CA
Default Re: Need some help...just failed state inspection. (los7883)

Are you sure you don't have a bad O2 sensor? In Cal., the OBDII part of the test just looks for failure codes that are set in memory (like the Service Engine light). I don't think the OBDII test actually checks for the value of emissions.
Reply
Old Jul 28, 2003 | 07:29 PM
  #4  
rhoeven's Avatar
rhoeven
Burning Brakes
15 Year Member
 
Joined: Feb 1999
Posts: 1,165
Likes: 1
From: San Jose CA
Default Re: Need some help...just failed state inspection. (los7883)

The OBDII transmission protocoll is most likely not compatible. An ODBII scanner for a ford can not be used on GM for example. Most likely, their scanner could not even connect to the computer.
Go to a GM dealer to perform the tests.

Hope this helps.

Roger

Reply
Old Jul 28, 2003 | 07:45 PM
  #5  
SFVetteman's Avatar
SFVetteman
Drifting
10 Year Member
 
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Default Re: Need some help...just failed state inspection. (rhoeven)

If you took the car to the same place last year and it passed then I don’t think it failed this year because their equipment was incompatible. I also don’t think it failed because you didn’t show any codes. Frankly, that just doesn’t make sense.

On the contrary, one or more of the codes you erased in the morning probably came back. While some codes wouldn’t flunk you, an emission related one probably would. Check your codes and see what’s up.
Reply
Old Jul 28, 2003 | 07:45 PM
  #6  
los7883's Avatar
los7883
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Jan 2002
Posts: 3,419
Likes: 0
From: Arlington TX
Default Re: Need some help...just failed state inspection. (rhoeven)

Crap...just hooked up my EFI Live and ran OBD II system checks and checked O2's all the way around...all O2's are working and sending out data...but on the System Test I got the same errors that the dealership got. Here are their results:

MIL Command Status: Off
MIL Engine On: Pass
MIL Engine Off: Pass
Misfire: Ready
Fuel System: Ready
Comp Cmpnt: Ready
Catalyst: N/S
Heated Cat: Not Ready
Evap: Ready
2nd Sys: Ready
Air Cond: Not Ready
O2 Sensor: Ready
O2 Sensor Heater: Not Ready
EGR System: Ready
DLC: Pass
Gas Cap Integrity: Pass
Safety Items: Pass
Fault Codes:

Here is what I got on mine:
Click on image to enlarge it.


So I don't think it's their computers...something's acting weird...could it be that since I just had the car tuned again the day before yesterday the car is acting a little froggy? Should I just unhook the battery and do a relearn to see if everything resets? This has never happened before so I'm kinda stumped...thanks for the help.
Reply
Old Jul 28, 2003 | 07:45 PM
  #7  
BlueDragon's Avatar
BlueDragon
Drifting
10 Year Member
 
Joined: Jul 2002
Posts: 1,484
Likes: 0
From: Morgan Hill Ca.
Default Re: Need some help...just failed state inspection. (rhoeven)

Hum, this is interesting. Mine failed last year and the OBDII scan tool that was used picked up the history code even though I cleared it just prior to going in, so it may clear it from the DIC, but it is still stored somewhere in there. My failure was a AIR malfunction on start up. I fixed the problem and just drove it around for a few days and went back in. I did not go to a GM dealer, just a normal check station and they had the stuff to do it. Even if you clear the codes the ODB tools can still down load them.

The tool that my guy used had a selection for all make and model cars. They just select the year and make/model and up she comes!

Looking at you codes, it looks funny to me that some are showing not ready?? I would do what you suggest, and disconnect the battery and go through the relearn.
Jer

Jer


[Modified by BlueDragon, 6:51 PM 7/28/2003]
Reply
Old Jul 28, 2003 | 07:53 PM
  #8  
los7883's Avatar
los7883
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Jan 2002
Posts: 3,419
Likes: 0
From: Arlington TX
Default Re: Need some help...just failed state inspection. (BlueDragon)

Ok...I'm reading the results they gave me and this is what I've found:

FAQ's

Why did my vehicle fail the "Readiness Monitor" portion of the inspection?
Because more than two monitors in your vehicle's compuer are set to "Not Ready." The monitors must be set to "Ready" before the car can pass the "Readiness Monitor" portion of the inspection.

What causes the monitors to be "Not Ready?"
Disconnecting the battery is the most common reason the monitors are "Not Ready." Some examples of battery disconnection are: Engine tune-ups, battery replacement, radio installations, and alarm installations.

Does my car need repairs?
Not necessarily. Your vehicle may only need to be driven in a pattern that causes the system to change the monitors from "Not Ready" to "Ready." The drive patterns, or drive cycles, for your vehicle should be available from your vehicle service advisor or qualified vehicle service technician.


Well this makes me feel a little bit better...does anyone know the drive cycle right off the top of their head? I have read it somewhere but can't remember.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Jul 28, 2003 | 08:02 PM
  #9  
SFVetteman's Avatar
SFVetteman
Drifting
10 Year Member
 
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Default Re: Need some help...just failed state inspection. (los7883)

Check your codes on the DIC. If you still don't show any codes then it's probably because some tests have to fail a certain number of times before it triggers a DTC code. Driving it around for a few days will probably fulfill the requirements for setting the code(s).

Once you know what the DTC code is you'll know what your problem is.
Reply
Old Jul 28, 2003 | 08:11 PM
  #10  
2k4vette's Avatar
2k4vette
Racer
10 Year Member
 
Joined: Jun 2003
Posts: 343
Likes: 0
From: Waterford Mi
Default Re: Need some help...just failed state inspection. (SFVetteman)

I am soo glas we don't have to do that anymore here in Mi.
Reply
Old Jul 28, 2003 | 08:11 PM
  #11  
minivette's Avatar
minivette
Racer
 
Joined: Sep 2002
Posts: 332
Likes: 0
From: Austin Tx
Default Re: Need some help...just failed state inspection. (los7883)

...it turns out that it MAY be due to the fact that I reset all my codes this morning...and since there was no history for their computer to look at, the test was not run. Their advice was to drive the car for a couple of days and then to take it back so that they can check it again. What do yall think?
That's why. The PCM needs to have a certain number of cycles to make everything "Ready". Drive it a couple days and then retest. This will probably guarantee that the test will run, not that you will pass.
Reply
Old Jul 28, 2003 | 08:18 PM
  #12  
RWhite's Avatar
RWhite
Melting Slicks
10 Year Member
 
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Default Re: Need some help...just failed state inspection. (los7883)

[QUOTE]
Heated Cat: Not Ready
Air Cond: Not Ready
O2 Sensor Heater: Not Ready

In Texas, I think you can only have a max. of 2 "Not Ready's". Since you had 3, it flunked you. I'd drive it around a number of miles. I am pretty sure you can't reset the codes out in the parking lot and then drive in and pass. "They are pretty cotton to that already."

I am facing a even bigger batle than you come February. I have not found anybody yet with a BIG cam here in Dallas that said they pass the test (with cats). I have not scanned mine lately, but I know I have a code thrown due to the cam. I posted on LS1.com and got no answers about anyone with these big cams passing (legally that is). :D
Reply
Old Jul 28, 2003 | 08:28 PM
  #13  
Z06ufgrad2002's Avatar
Z06ufgrad2002
Safety Car
20 Year Member
 
Joined: Nov 2002
Posts: 4,394
Likes: 6
From: Melbourne FL
Default Re: Need some help...just failed state inspection. (RWhite)

Heated Cat: Not Ready
Air Cond: Not Ready
O2 Sensor Heater: Not Ready

In Texas, I think you can only have a max. of 2 "Not Ready's". Since you had 3, it flunked you. I'd drive it around a number of miles. I am pretty sure you can't reset the codes out in the parking lot and then drive in and pass. "They are pretty cotton to that already."

I am facing a even bigger batle than you come February. I have not found anybody yet with a BIG cam here in Dallas that said they pass the test (with cats). I have not scanned mine lately, but I know I have a code thrown due to the cam. I posted on LS1.com and got no answers about anyone with these big cams passing (legally that is). :D
This is just one more reason I love to live in FL. :cheers:
Reply
Old Jul 28, 2003 | 08:54 PM
  #14  
gojo's Avatar
gojo
Melting Slicks
15 Year Member
 
Joined: Feb 2002
Posts: 2,613
Likes: 0
From: Winston Salem NC
Default Re: Need some help...just failed state inspection. (RWhite)

Those codes will go away aslong as you don't re-flash the PCM.

RE: passing with a big cam. You have to set the misfire detection to 32000 in idle and low and you will pass OBDII.
Reply
Old Jul 28, 2003 | 09:26 PM
  #15  
los7883's Avatar
los7883
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Jan 2002
Posts: 3,419
Likes: 0
From: Arlington TX
Default Re: Need some help...just failed state inspection. (jfpilla)

Ok, just drove it around again...now getting PCM P0751 Shift Solenoid A Performance or Stuck Off....hmmm....any idea how many drive cycles it may take to "reset" everything? Should I go clear this code or leave it alone for now?
Reply
Old Jul 28, 2003 | 09:52 PM
  #16  
SFVetteman's Avatar
SFVetteman
Drifting
10 Year Member
 
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Default Re: Need some help...just failed state inspection. (los7883)

I wouldn't clear any codes for now even though that doesn't appear to be emission related. Different codes may require different numbers of ignition cycles to set. Some codes are related to cold startup and may require a few of cold starts if they are going to set.

I don't have my service manual handy but from memory, 4 seems to be a popular number for a test to be run before a failure is recorded and a code sets. Also, depending on the test there are often other parameters such as temperature for the test to run.


[Modified by SFVetteman, 7:00 PM 7/28/2003]
Reply
Old Jul 29, 2003 | 12:24 AM
  #17  
RWhite's Avatar
RWhite
Melting Slicks
10 Year Member
 
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Default Re: Need some help...just failed state inspection. (jfpilla)

RE: passing with a big cam. You have to set the misfire detection to 32000 in idle and low and you will pass OBDII.
OK, I will remember that. Thanks! :D

Also, here is a website for the Texas Emissions testing. http://www.txdps.state.tx.us/vi/insp...a_loc_emis.asp


[Modified by RWhite, 11:28 PM 7/28/2003]
Reply

Get notified of new replies

To Need some help...just failed state inspection.

Old Jul 29, 2003 | 01:04 AM
  #18  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Need some help...just failed state inspection. (los7883)

That hookup to your car reads the long term fuel trims, by erasing that info... it failed the test. Go out and drive your car everyday starting it up, driving it, letting it cool down, then do it again. by 10 days or so you will have all the info you will need in the computer to pass...

Let this be lesson to everyone who has to take a smog test... DO NOT RESET THE COMPUTER BEFORE GOING IN FOR THE TEST!! :nono:

vetterdstr :cheers:
Reply
Old Jul 29, 2003 | 02:10 AM
  #19  
molon labe's Avatar
molon labe
Le Mans Master
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: May 2000
Posts: 5,377
Likes: 14
From: Kansas City MO
Default Re: Need some help...just failed state inspection. (los7883)

i'd just go somewhere else and get one of the $50 inspections. ;)
Reply
Old Jul 29, 2003 | 08:39 AM
  #20  
DBRASUE's Avatar
DBRASUE
Drifting
15 Year Member
 
Joined: Jul 2003
Posts: 1,647
Likes: 2
From: Peoples Republik of Kalifornia Ka
Default Re: Need some help...just failed state inspection. (vetterdstr)

GOOD advise! Thanks Much! :thumbs: :thumbs: :thumbs:
Reply



All times are GMT -4. The time now is 10:01 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE