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:

Failed Emissions Test

Thread Tools
 
Search this Thread
 
Old Nov 26, 2003 | 12:46 PM
  #1  
Wt99C5's Avatar
Wt99C5
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Default Failed Emissions Test

Just ran my 99Â’ thru the Emissions Test and failed. :bb
The dude at the emissions station asked if I recently had a dead battery. Well, a few weeks back I installed a new Red Top and have been on the road for work since. He suggested I call the dealer for help. Any one else have this problem and know how many miles before the PCM would show a state of READY.?


[Modified by Wt99C5, 5:47 PM 11/26/2003]
Reply
Old Nov 26, 2003 | 01:21 PM
  #2  
ArKay99's Avatar
ArKay99
Safety Car
15 Year Member
 
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
Default Re: Failed Emissions Test (Wt99C5)

I believe it's how many miles, but how many starts. It might be in the service manuals, but I'm at work now. I'll check them when I get home later and if someone hasn't answered you and I find it I'll post you back. :thumbs:
Reply
Old Nov 26, 2003 | 01:36 PM
  #3  
TLewis4095's Avatar
TLewis4095
Le Mans Master
 
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Default Re: Failed Emissions Test (Wt99C5)

If you put a hundred miles on it the PCM usually has relearned again....but the idle re-learn is quicker. Do a search in the archives for instructions. :cheers:
Reply
Old Nov 26, 2003 | 01:44 PM
  #4  
Son93SL2's Avatar
Son93SL2
Team Owner
10 Year Member
 
Joined: May 2001
Posts: 27,713
Likes: 0
From: I take pictures. Cincinnati, Ohio
Default Re: Failed Emissions Test (Wt99C5)

I have always heard 2 tanks of gas :leaving:
Reply
Old Nov 26, 2003 | 02:19 PM
  #5  
Wt99C5's Avatar
Wt99C5
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Default Re: Failed Emissions Test

ArKay, I have the manuals, but can’t find what I’m looking for, no surprise. But you might be on to something. I was able to find a Warm Ups w/o Emission Faults counter. The counter runs from 0-255 and is reset to 0 if power is lost. The problem is, it doesn’t say how many starts are required to connect to the State’s Emission System, or even if this is the problem. I’ll keep looking.

Tlewis, I haven’t tried an idle relearn since installing the new battery. The emissions guy said the car’s got a bad miss. I told him it was the new spark plugs. Guess he couldn’t tell it was the cam.

Son93SL2, Hope it’s not 2 tanks a gas. 2 tanks would last me till next year’s emissions test. :lol:

Also, I only have the same old :bs codes.
1064
2606
1096………
Reply
Old Nov 26, 2003 | 02:39 PM
  #6  
TLewis4095's Avatar
TLewis4095
Le Mans Master
 
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Default Re: Failed Emissions Test (Wt99C5)

Possible bad O2 sensor may cause a rich condition as well....especially if you have a miss. Did you look at your old plugs that came out? Were they a lite grey-tan? All is well if they were....but covered in black soot shows rich. Also, if new plugs were just installed check wires to see that one did not get streched & broke when removeing them....center conductor damage not visible from the outside. Or a bad plug from the start....all could cause failed emmisions.

Good luck! Quick way to see whats wrong is hook it up to an engine scanner and see. :thumbs:
Reply
Old Nov 26, 2003 | 08:20 PM
  #7  
texasredc8's Avatar
texasredc8
Drifting
20 Year Member
All Eyes On Me
Liked
Top Answer: 1
 
Joined: Sep 2002
Posts: 1,527
Likes: 52
From: Houston, TX
Default Re: Failed Emissions Test (TLewis4095)

I think you can only have 2 Not-Readys or the car will fail the OBDII test. You can always opt for the dyno or sniffer test........ at least in Texas you can.

Takes 50 ignition cycles to bring the PCM up to Ready state.
Reply
Old Nov 26, 2003 | 08:43 PM
  #8  
Monster231's Avatar
Monster231
Safety Car
 
Joined: Feb 2003
Posts: 3,865
Likes: 0
From: Chicago il
Default Re: Failed Emissions Test (TexasRedZ06)

I think you can only have 2 Not-Readys or the car will fail the OBDII test. You can always opt for the dyno or sniffer test........ at least in Texas you can.

Takes 50 ignition cycles to bring the PCM up to Ready state.
:iagree:
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Nov 26, 2003 | 08:57 PM
  #9  
Wt99C5's Avatar
Wt99C5
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Default Re: Failed Emissions Test

Takes 50 ignition cycles to bring the PCM up to Ready state.
Ouch 50 ignition cycles...! I sure picked a bad time to replace the battery. Guess I'll shut her off at every stop light. Thanks for the info.
Reply
Old Nov 26, 2003 | 11:06 PM
  #10  
Gary2KC5's Avatar
Gary2KC5
Le Mans Master
20 Year Member
Liked
 
Joined: Apr 2001
Posts: 5,331
Likes: 39
Default Re: Failed Emissions Test (Wt99C5)

Takes 50 ignition cycles to bring the PCM up to Ready state.

Ouch 50 ignition cycles...! I sure picked a bad time to replace the battery. Guess I'll shut her off at every stop light. Thanks for the info.
50 ignition cycles will clear a code or change it from a "C" current to "H" history status. That may not be the issue though. The idle re-learn usually takes about 30 miles or 30 minutes of driving.

Pull your codes and see what you've got cooking.

I'm assuming your test is strictly with the OBDII and not sniffing the exhaust.
Reply
Old Nov 27, 2003 | 09:05 AM
  #11  
Wt99C5's Avatar
Wt99C5
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Default Re: Failed Emissions Test (Gary2KC5)

50 ignition cycles will clear a code or change it from a "C" current to "H" history status. That may not be the issue though. The idle re-learn usually takes about 30 miles or 30 minutes of driving.

Pull your codes and see what you've got cooking.

I'm assuming your test is strictly with the OBDII and not sniffing the exhaust.
My best guess is I have about 10 ignition cycles completed since the battery swap. I checked the codes yesterday; they were all the normal crap codes such as 1064, 2606, and 1096. The interesting thing is they are already History codes. Makes me wonder if displayed codes are stored in a non-volatile area of the PCM and counters are cleared\ reset once power is lost. So far the only thing I can find in the shop manual is this counter ….Warm Ups w/o Emission Faults ….

Yeah, I don’t believe the sniffer test is an option here anymore. Truth is, I don’t think it would pass anyway. After installing all my mods, she’s running Burn your eye’s rich. . I hope to check things out with EFILive later this morning. What I really need to do is drop it off at nevrenuf’s house and have him work some of his magic.
Reply
Old Nov 27, 2003 | 09:26 AM
  #12  
bowtiebandit's Avatar
bowtiebandit
Drifting
10 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2003
Posts: 1,557
Likes: 0
From: Columbia MD
Default Re: Failed Emissions Test (Wt99C5)

Hope this helps................................... .........

Inspection/Maintenance Status Reset Procedures
System Status For Satisfying the Federal Inspection/Maintenance (I/M) Regulations
The scan tool System Info menu includes the System Status selection.

Several states require that the vehicle pass on-board (OBD ll system) tests for the major diagnostics prior to having a vehicle I/M emission inspection. Some areas may require that the vehicle pass the OBD II system tests and the I/M emission inspection in order to renew license plates.

Using a scan tool, the technician can observe the System Status (Complete or Not Complete) in order to verify that the vehicle meets the criteria which complies with the local area requirements. Using the System Status display, monitor any of the following systems or a combination of the systems (depending on vehicle make and model) for I/M Readiness:

Catalyst
Heated Oxygen Sensor (HO2S)
Heated Oxygen Sensor (HO2S) Heater
Exhaust Gas Recirculation (EGR), if so equipped
Evaporative Emission (EVAP)
Secondary Air Injection System (AIR), if so equipped

Important
The System Status display indicates only if the PCM has completed the required tests (DTCs). The System Status display does not necessarily mean that the test has passed. If a failure indication is present for a DTC associated with one of the above systems, that test has failed. Diagnosis and repair are necessary in order to meet the I/M requirement. Verify that the vehicle passes all of the diagnostic tests associated with the displayed System Status prior to returning the vehicle to the customer.


Following a DTC Info Clear, battery disconnect, or a control module replacement, all of the System Status information will be set to Not Complete.

Refer to the diagnostic support information associated with each DTC in order to obtain the Conditions for Running the DTC. The vehicle operating conditions that the system must meet in order for a DTC to run are the Conditions for Running the DTC.

The System Status table shows the DTCs that must run in order for the System Status to indicate a system test has been Completed.

System Status System Status
DTCs Used to Set System Status

Catalyst
P0420, P0430

HO2S
P0133, P0153, P1133, P1134, P1153, and P1154

HO2S Heater
P0135, P0141, P0155, and P0161

EGR System

(If so equipped)
P0401

EVAP System
P0440, P0442, P0446, P1441, or the Service Bay Test

AIR System

(If so equipped)
P0410

Scan Tool Tests
The scan tool for some systems depending upon the vehicle make and model include the Service Bay Tests. Use the Service Bay Tests in order to test certain systems and reset the System Status to Complete. The EVAP Service Bay Test is included for this vehicle. Refer to the Service Bay Tests for important preliminary instructions.

Reply
Old Nov 27, 2003 | 09:45 PM
  #13  
Wt99C5's Avatar
Wt99C5
Thread Starter
Burning Brakes
10 Year Member
 
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Default Re: Failed Emissions Test (bowtiebandit)

Hope this helps................................... .........

:yesnod: Thanks ! :thumbs:
Reply

Get notified of new replies

To Failed Emissions Test





All times are GMT -4. The time now is 07:40 PM.

story-0
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
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE