38050 miles and.... - LS1TECH

Log In 


New LS1 Owners - Newbie Tech a.sponlink:link {font-size: 9px;} img.surround{ margin-bottom: 9.5px; } span.sponsortext { font-size: 10px; }
Basic Technical Questions & Advice
Sponsored by
Improved Racing

38050 miles and....

Reply
 
Thread Tools Search this Thread
Old 02-13-2004, 07:39 PM   #1
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default 38050 miles and....

My service engine light just came on


Three dyas ago, I had the oil, transmission fluid and rear diff fluid changed out.

Is this a dummy light for a tune up or something broken possibly?


2000 Camaro SS Automatic
Haru is offline   Reply With Quote
Old 02-13-2004, 07:43 PM   #2
Staging Lane
 
Join Date: Nov 2003
Location: Baton Rouge, LA
Posts: 66
Default

go to Autozone. They'll check it for free. But I wouldn't buy any expensive parts without researching here first. These guys are great!
tnnntj is offline   Reply With Quote
Old 02-13-2004, 07:56 PM   #3
TECH Junkie
iTrader: (9)
 
Fulton 1's Avatar
 
Join Date: Dec 2001
Location: WA
Posts: 3,326
Default

There are literally hundreds of things that can set off the SES light and you really have no way of knowing what it is. So DO NOT GUESS. Buy yourself an OBDII code reader (great tool to have anyway) or follow tnnntj's advice and have the code read somewhere. Once you know the code then post it up and we can try and trouble shoot it.
Fulton 1 is offline   Reply With Quote
Old 02-13-2004, 08:35 PM   #4
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default

ok, thank you very much for the info. Headed to autozone right now.
Haru is offline   Reply With Quote
Old 02-13-2004, 09:36 PM   #5
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default

Went to autozone and the gentleman said they do not do the diagnostics anymore. (being sued or something). Then I asked how much the OBDII would cost me, he said "whats that"?

Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
Haru is offline   Reply With Quote
Old 02-13-2004, 09:43 PM   #6
It's not mine! woo hoo!
iTrader: (7)
 
demonspeed's Avatar
 
Join Date: Jun 2003
Location: Pittsburgh, PA
Posts: 7,120
Default

that's a weird one... Maybe it means you need long tubes and no cats
demonspeed is offline   Reply With Quote
Old 02-13-2004, 10:22 PM   #7
Staging Lane
 
Join Date: Nov 2003
Location: Baton Rouge, LA
Posts: 66
Default

Quote:
Originally Posted by Haru
Went to autozone and the gentleman said they do not do the diagnostics anymore. (being sued or something). Then I asked how much the OBDII would cost me, he said "whats that"?

Went to kragen and bought one because I left Autozone frustrated. Code PO420 Is what the code reader gave me. "Catalyst System Efficiency Below Thresheshold (Bank 1).
Probably useless info but FWIW. I got a code once, took it to dealership (b4 I knew about Autozone) and they said it was the air-pump (into the exhaust) which supposedly keeps it cleaner somehow. The part was $240 so I just ignored it. I almost never get it anymore not even once since I started modding. Like I said probably useless
tnnntj is offline   Reply With Quote
Old 02-14-2004, 01:27 AM   #8
Smoke N' Go
iTrader: (2)
 
Cummins's Avatar
 
Join Date: Oct 2003
Location: Oconomowoc, Wisconsin
Posts: 724
Default

Quote:
Originally Posted by DMNSPD
that's a weird one... Maybe it means you need long tubes and no cats
Cummins is offline   Reply With Quote
Old 02-14-2004, 10:52 AM   #9
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default

I would like to have no cats and do the longtubes. Here in California it would get me in trouble with the law. If there are any other ideas, please let me know
Haru is offline   Reply With Quote
Old 02-14-2004, 11:56 AM   #10
TECH Junkie
iTrader: (23)
 
Turo's Avatar
 
Join Date: Aug 2003
Location: Tallahassee, FL
Posts: 3,467
Default

Quote:
Originally Posted by Haru
I would like to have no cats and do the longtubes. Here in California it would get me in trouble with the law. If there are any other ideas, please let me know
i just did a search on that error code (yes, im that bored ), and found out that a few people got that code because their 02 sensor was going bad (the one after the cat). i guess that could be the culprit. hope this helps, good luck!
Turo is offline   Reply With Quote
Old 02-14-2004, 12:16 PM   #11
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default

Is there an "easy" way to test the sensor after the cat?


Thanks for your help, I have been camping this sight for hours now I will give it a shot.
Haru is offline   Reply With Quote
Old 02-14-2004, 12:54 PM   #12
It's not mine! woo hoo!
iTrader: (7)
 
demonspeed's Avatar
 
Join Date: Jun 2003
Location: Pittsburgh, PA
Posts: 7,120
Default

Quote:
Originally Posted by Haru
Is there an "easy" way to test the sensor after the cat?


Thanks for your help, I have been camping this sight for hours now I will give it a shot.
i think if you pulled the sensor out you'd be able to tell that it didn't look right. I'm no expert by any means, but i'd just crawl under there and take a look.
demonspeed is offline   Reply With Quote
Old 02-14-2004, 01:26 PM   #13
TECH Apprentice
iTrader: (1)
 
Join Date: Jan 2003
Location: Brandon, FL
Posts: 387
Default

Quote:
Originally Posted by DMNSPD
i think if you pulled the sensor out you'd be able to tell that it didn't look right. I'm no expert by any means, but i'd just crawl under there and take a look.
Not only that, but o2 sensors are pretty cheap anyway, and fairly easy to replace.
BlackTA is offline   Reply With Quote
Old 02-14-2004, 02:16 PM   #14
On The Tree
 
xtreme2001's Avatar
 
Join Date: Jan 2004
Location: meridian,ms
Posts: 174
Default

and if you don't know.........bank 1 is the driver's side
xtreme2001 is offline   Reply With Quote
Old 02-14-2004, 03:29 PM   #15
TECH Junkie
iTrader: (9)
 
Fulton 1's Avatar
 
Join Date: Dec 2001
Location: WA
Posts: 3,326
Default

Yes, likely a bad O2 sensor. Check to make sure there are no exhaust leaks around the convertor area and there is no damage to the sensors or wire pigtails (e.g. burnt due to contact with exhaust, etc). Check to make sure the connectors are plugged in. You'll have one O2 forward of the cat and one behind. If all of the above checks out, I'd pick up a replacement O2 sensor and try that.

If you have access to Autotap or similar diagnostic software you may be able to run an O2 sensor test - I've never done it myself though.

*Note that I'm assuming you have the stock exhaust manifolds/cats. If you're using headers or have otherwise modified/relocated your cats, then I'd start there.
Fulton 1 is offline   Reply With Quote
Old 02-14-2004, 05:18 PM   #16
Launching!
iTrader: (4)
 
dudas35's Avatar
 
Join Date: Aug 2003
Location: Lagrange Ga/Mayport Fl
Posts: 222
Default

Or, just buy a pair of O2 sims to get rid of it and make sure it doesn't come back.
dudas35 is offline   Reply With Quote
Old 02-14-2004, 06:20 PM   #17
TECH Fanatic
iTrader: (4)
 
Join Date: Dec 2003
Location: Dallas, Tx
Posts: 1,718
Default

Quote:
Originally Posted by dudas35
Or, just buy a pair of O2 sims to get rid of it and make sure it doesn't come back.
if i'm not mistaken, you'd still have to plug the simms into the o2 sensor itself, and if the o2 sensor itself is the problem, then plugging a simulator into it will not solve the problem.
tuffluck is offline   Reply With Quote
Old 02-14-2004, 08:53 PM   #18
TECH Junkie
iTrader: (23)
 
Turo's Avatar
 
Join Date: Aug 2003
Location: Tallahassee, FL
Posts: 3,467
Default

Quote:
Originally Posted by tuffluck
if i'm not mistaken, you'd still have to plug the simms into the o2 sensor itself, and if the o2 sensor itself is the problem, then plugging a simulator into it will not solve the problem.
you dont plug them into the sensor, you unplug the sensor and plug them into the harness
Turo is offline   Reply With Quote
Old 02-14-2004, 11:46 PM   #19
TECH Fanatic
iTrader: (4)
 
Join Date: Dec 2003
Location: Dallas, Tx
Posts: 1,718
Default

Quote:
Originally Posted by Donate52
you dont plug them into the sensor, you unplug the sensor and plug them into the harness
ah, thanks. i guess i was mistaken
tuffluck is offline   Reply With Quote
Old 02-16-2004, 01:43 AM   #20
Teching In
Thread Starter
 
Haru's Avatar
 
Join Date: Feb 2004
Location: Sacramento, CA
Posts: 16
Default Update

Picked up the sensor today, will hopefully be installing tomorrow. After install, do I erase the code with the OBDII and hope the light doesn't return? Or Do I undo the battery cable for fifteen minutes like I have read and hope the light doesn't come on?

Only one they had was a Bosch.
Haru is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 11:35 PM.