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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 02-17-2011, 08:19 PM   #1
CamaroRS/SS10
 
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Check Engine Light On With Long Tube Headers

I put a set of long tube headers on my LS3 and I keep getting a check engine light on saying the Front O2 sensors are not getting hot enough. Does anyone know a good fix for this. Please help. I don't really want to tune the car because I don't want to void the warranty.

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Old 02-17-2011, 08:25 PM   #2
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You just voided your warranty with headers! Ok, not really, you still have warranty on most things and the dealer can be a pain if they choose to especially when it comes to engine work.
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Old 02-17-2011, 08:31 PM   #3
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Originally Posted by CamaroRS/SS10 View Post
I put a set of long tube headers on my LS3 and I keep getting a check engine light on saying the Front O2 sensors are not getting hot enough. Does anyone know a good fix for this. Please help. I don't really want to tune the car because I don't want to void the warranty.
Actually I have heard through the grape vine, they won' void your warranty, depending on what goes wrong....but that is depending on your dealer and how much you are willing to fight.....Only way around is to tune....
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You just voided your warranty with headers! Ok, not really, you still have warranty on most things and the dealer can be a pain if they choose to especially when it comes to engine work.
I like the name of the city you are from...it's my last name
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Old 02-17-2011, 08:31 PM   #4
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You just voided your warranty with headers! Ok, not really, you still have warranty on most things and the dealer can be a pain if they choose to especially when it comes to engine work.
What did you do to get your check engine light off?
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Old 02-17-2011, 08:32 PM   #5
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What did you do to get your check engine light off?
You HAVE to tune the car if you go the Long Tube route. The tune removes the check engine light.
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Old 02-17-2011, 08:35 PM   #6
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I've read this more than once...the big debate about a tune. It voids the warranty. The OP said he's concerned about voiding the warranty. I haven't read a single story of someone not voiding their warranty with a tune so the jury is still out. Hope this helps.
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Old 02-17-2011, 08:35 PM   #7
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What did you do to get your check engine light off?
I am getting it tuned as soon as the road salt goes away. I am not driving the car at the moment, just sits under the cover.
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Old 02-17-2011, 08:42 PM   #8
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You could try o2 sensor extenders for the downstream sensors...do you have hi flo cats or no cats? I'm not sure if it would work for the CEL code you are getting though...it sounds odd to me

you should probably tune it anyways to get the most out of your headers

you could just put a piece of masking tape over the CEL
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Old 02-17-2011, 08:43 PM   #9
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hold on to your * when you get it tuned. it will feel like a different car. have fun
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Old 02-17-2011, 08:48 PM   #10
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not sure what help the picture did. but ya a tune will take care of it
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Old 02-17-2011, 09:21 PM   #11
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That's a tough spot seeing how you don't want to void the warranty. You already bought and installed a performance mod that requires a tune to get the most out of it and get rid of the check engine light sometimes it will actually perform worse without the tune. If you tune then warranty most likely voided. No tune and you basically are wasting your money on the headers as you won't get nearly the power you should be getting and have a CEL always on.

Gonna have to decide to either get the tune, live with it as is and hope for no issues or remove sell and reinstall old setup.
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Old 02-17-2011, 09:24 PM   #12
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Have your ooh soo fine car professionally tuned. That'll fix the engine light, AND it'll run hella faster!
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Old 02-17-2011, 09:31 PM   #13
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That's why I'm gonna wait 'til I'm out of warranty to mod my SS. But after that watch out, I've got a bunch of mods planned.
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Old 02-17-2011, 09:38 PM   #14
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That tends to happen
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Old 02-18-2011, 08:16 AM   #15
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just get an obd2 scanner and clear the code, you dont "have" to tune the car with lt's but it does free up a lot of power.
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Old 02-18-2011, 09:05 AM   #16
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see if you can get ahold of Highcompression he installed LT headers and used antifoilers/O2 extenders and to my knowledge he still does not have a CEL. Mine came on after only 300 miles so I got mine tuned. Your choice.
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Old 02-18-2011, 09:25 AM   #17
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Quote:
Originally Posted by CamaroRS/SS10 View Post
I put a set of long tube headers on my LS3 and I keep getting a check engine light on saying the Front O2 sensors are not getting hot enough. Does anyone know a good fix for this. Please help. I don't really want to tune the car because I don't want to void the warranty.
You do know that Onstar is reporting your engine codes to GM right.

It is Best to get a Tune and eliminate any annoying codes, clearing them is only temporary and will be a daily routine..

Modify and personalize your Car and accept the possible but unlikely consequences, or Leave it alone and keep your warranty.

Sorry to be so blunt, but, I want to modify my car and Keep my warranty is getting Very Very Very OLD.

Ted.
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Old 02-18-2011, 09:40 AM   #18
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You do know that Onstar is reporting your engine codes to GM right.

It is Best to get a Tune and eliminate any annoying codes, clearing them is only temporary and will be a daily routine..

Modify and personalize your Car and accept the possible but unlikely consequences, or Leave it alone and keep your warranty.

Sorry to be so blunt, but, I want to modify my car and Keep my warranty is getting Very Very Very OLD.

Ted.
Well said Ted. Warranty is for weenies. My car had only 1500 miles on it before I started modding it. These cars are not that high tech. Motors are easy to work on for the most part.

It seems like there is a post every day about modding your car and voiding your warranty.
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Old 02-18-2011, 10:53 AM   #19
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if it is really for the O2's not getting hot enough, could you install heated O2's?
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Old 02-18-2011, 10:54 AM   #20
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if it is really for the O2's not getting hot enough, could you install heated O2's?
They Are Heated. High flow means less heat so they don't come on line fast enough.

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Old 02-18-2011, 11:02 AM   #21
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That's why I'm gonna wait 'til I'm out of warranty to mod my SS. But after that watch out, I've got a bunch of mods planned.
You do know its a 100,000 mile warranty right?
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Old 02-18-2011, 11:11 AM   #22
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You do not have to have a tune to get the check engine light off where do you guys get this stuff? Go to any tuner and tell him to turn of the o2s he may even do it for free if you tell him you will get it tuned there later . It will take less than 5 min
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Old 02-18-2011, 11:18 AM   #23
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Too bad you cant get MIL eliminators anymore. They worked great on my 03 cobra when i pulled the cats off. They make the computer think everything is fine. Eventually I had it tuned but they were a cheap quick fix for the CEL light.
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Old 02-18-2011, 12:27 PM   #24
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You do not have to have a tune to get the check engine light off where do you guys get this stuff? Go to any tuner and tell him to turn of the o2s he may even do it for free if you tell him you will get it tuned there later . It will take less than 5 min
It is still a tune whether they change 1 thing or 100 things.

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Old 02-18-2011, 02:36 PM   #25
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The OP isnt talking about the rear 02's needing to be turned off or tricked. Hes talking about the front 02's throwing a code for taking too long to heat up cause the car has longtubes. Those are 2 totally different things requiring a different way to fix them.
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