Forum Register Members Casino Live Posting Feed Garage Arcade iTrader Members List Calendar Search Today's Posts Mark Forums Read
Go Back   The Chicago Garage > The Garage > TCG Technical > GM Tech & Discussion

User Tag List

Like Tree4Likes
  • 1 Post By cmntmxr57
  • 1 Post By b4black
  • 1 Post By OffshoreDrilling
  • 1 Post By cmntmxr57

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 06-11-2018, 06:29 PM   #1
 
Marko's Avatar
 
Join Date: Feb 2005
Posts: 14,441
Casino cash: $56280175
2.91 per day
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Default 2000 Grand Am O2 Sensor

Service engine soon light came on and had Autozone check it for free. They said it’s the O2 sensor. Can I keep driving it for awhile without worrying about breaking down ? Don’t feel like spending money on it to get it fixed. It’s my DD

Doesn’t need emissions test this year either. Lol.
Marko is offline   Reply With Quote
Old 06-11-2018, 09:58 PM   #2
. .
 
boostedguy05's Avatar
 
Join Date: Dec 2010
Posts: 17,353
Casino cash: $48744000
6.12 per day
Mentioned: 82 Post(s)
Tagged: 1 Thread(s)
Default

Front or rear 02?
__________________
Quote:
Originally Posted by Mike K View Post
You're either a barely functioning idiot or you're a brilliant genius. I must study you.
boostedguy05 is offline   Reply With Quote
Old 06-11-2018, 10:06 PM   #3
 
Marko's Avatar
 
Join Date: Feb 2005
Posts: 14,441
Casino cash: $56280175
2.91 per day
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Default

Quote:
Originally Posted by boostedguy05 View Post
Front or rear 02?


Printout from Autozone. I heard it will run rich now too

Marko is offline   Reply With Quote
Old 06-11-2018, 10:06 PM   #4
 
Marko's Avatar
 
Join Date: Feb 2005
Posts: 14,441
Casino cash: $56280175
2.91 per day
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Default

The car has a 4 cyl. In it.
Marko is offline   Reply With Quote
Old 06-12-2018, 12:28 AM   #5
. .
 
boostedguy05's Avatar
 
Join Date: Dec 2010
Posts: 17,353
Casino cash: $48744000
6.12 per day
Mentioned: 82 Post(s)
Tagged: 1 Thread(s)
Default

Sensor 2 is rear sensor. Cat might also be bad.
boostedguy05 is offline   Reply With Quote
Old 06-12-2018, 12:29 AM   #6
. .
 
boostedguy05's Avatar
 
Join Date: Dec 2010
Posts: 17,353
Casino cash: $48744000
6.12 per day
Mentioned: 82 Post(s)
Tagged: 1 Thread(s)
Default

And yes, it can run rich
boostedguy05 is offline   Reply With Quote
Old 06-12-2018, 12:31 AM   #7
 
Marko's Avatar
 
Join Date: Feb 2005
Posts: 14,441
Casino cash: $56280175
2.91 per day
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Default

Quote:
Originally Posted by boostedguy05 View Post
And yes, it can run rich
Can I drive it for awhile without breaking down ?
Marko is offline   Reply With Quote
Old 06-12-2018, 12:36 AM   #8
Certified Dirty 'Ole Man & GM Nutswinger
 
cmntmxr57's Avatar
 
Join Date: Sep 2008
Location: CHICAGO
Posts: 6,455
Casino cash: $2396000
1.76 per day
Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Default

You'll be fine. This DTC is the result of the post-cat HO2S being below .400mV for a specified period of time. Usually in the 5 - 10 second window.

With this code, I would start looking at the wiring/connections/terminals/etc first. That is sometimes the issue with this code. Another trick if all wiring checks out and at least tide you over and save a few bucks in the interim, is to remove the sensor, clean it (the part that is in the exhaust stream), with something like a MAF or electronics cleaner, or even brakekleen, reinstall and see if that does it. I bet it's sooted up quite nicely which might be why. After checking the wiring, replacment of the sensor is next on the list IIRC.
Marko likes this.
__________________


Cool GM products
2004 Pontiac GTO - Mods? Yes.
2006 Cadillac STS-V - Mods? Yes.
2009 Chevrolet Impala SS - Stock
1999 Chevrolet Suburban - Plow beast

Shitty Chrysler Products
2015 Chrysler Town & Country Limited Platinum Stow-N-Go owns all
2007 Chrysler Town & Country Limited Stow-N-Go owns all
cmntmxr57 is offline   Reply With Quote
Old 06-12-2018, 07:45 AM   #9
 
b4black's Avatar
 
Join Date: Jun 2008
Location: Oswego
Posts: 871
Casino cash: $15325000
0.23 per day
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Default

Quote:
Originally Posted by Marko View Post
Can I drive it for awhile without breaking down ?
Yes, the rear sensor will have no effect on the way the engine runs on a 2000. It just confirms the catalyst is working.
Marko likes this.
b4black is offline   Reply With Quote
Old 06-12-2018, 07:49 AM   #10
This is my safe space
 
OffshoreDrilling's Avatar
 
Join Date: Aug 2007
Location: Chicago
Posts: 28,096
Casino cash: $117028000
6.95 per day
Mentioned: 389 Post(s)
Tagged: 3 Thread(s)
Default

You can get a rear O2 sensor for $18.15 on rock auto. I’d just change it instead of assuming that the CEL is for the sensor then having something else go wrong and unnoticed.
Marko likes this.
__________________
07' BMW 335i coupe JB4, VRSF downpipes, dci,intercooler, e85, VMR wheels. High mileage oil stain maker.

OffshoreDrilling is offline   Reply With Quote
Old 06-12-2018, 09:49 AM   #11
Certified Dirty 'Ole Man & GM Nutswinger
 
cmntmxr57's Avatar
 
Join Date: Sep 2008
Location: CHICAGO
Posts: 6,455
Casino cash: $2396000
1.76 per day
Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Default

The sensor may actually be fine though. The bulk of the troubleshooting for this diagnostic is wiring issues. Chaffed, worn through, shorting out harnesses. Pulled connectors/terminals, etc. The last step is actual sensor replacement. I think they even recommend to replace the PCM first before the actual sensor in this particular code, which is out of GM's normal step by step process eliminating things from cheapest to most expensive. Usually PCM replacement is the last. So the emphasis is on the wiring here.
Marko likes this.
cmntmxr57 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:08 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
User Alert System provided by Advanced User Tagging v3.0.6 (Lite) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
no new posts