LG, I put new plugs in today. I didn't see any noticeable cracks in any of the stock plugs and the wires are new. I checked the O2 sensor and it's in tight and I can't see any signs of any exhaust leaks around the flange or at the collectors. Last week I had the x-pipes-cats-intermediate pipes welded together because even with the slits in the cats the exhaust tips still wouldn't hold. Today after I got everything done I ran the car for 2 minutes or so and I did see a small leak in the weld that holds the back of the cat on one side to the intermediate pipe. Given that the joint is aft of the sensor would that cause the code I have or have no affect on it?

 

Lou,
JMX found a faulty adapter with a wire in the wrong place. I can send y ou another adapter to replace the side that is giving you the code. I don't know but maybe that could be the problem.

Maybe Jon M JMX could chime in as to how he found the bad wire.

At any rate, I will send you a new adapter.

if there is a leak back at the cats, it won't affect your 02s so it is something else.
Keep in mind that it might just be a bad 02 sensor also.

Thanks

LG

 

Let me know if you ever get rid of the P0153 code. I have NEVER got rid of it or P0133... Did the usual stuff bought new O2s, tried moving rear O2s into the front wiring and front bungs, had front bungs moved closer to primaries.. NOTHING has fixed it...
:sad:

 

Lou, anything you can provide would be appreciated. This is a pain in the butt because the car sounds great and runs hard, but having that Check Engine light staring me in the face every time I drive the car is more than just annoying! Where can I buy a new sensor, too? I might as well replace that now, too. Thanks.

 

Autozone and Advanceauto and this place, http://oxygensensors.com

good luck, I am still fighting the same problem...
:cheers:

 

Which one do I need?

 

Denso are arguably the best made. Here is a forum review: https://www.corvetteforum.com/review...633&TopicID=15

I have already tried the Bosch and I am still getting the error codes. I have had no experience with the Walker brand.

Good Luck,

:cheers:

 

Then what they say is tru.."Its all about the P.O.P. (Power of the *ussy) :lol:

 

Do I want the front sensor or the rear sensor?

 

You want the rear sensors.

 

I honestly don't know. Call Lou at LG and ask him. I have tried both, neither have worked for me... :nonod:

 

Lou, did you send me out another adaptor? Can you provide me with a new O2 sensor for that side? How much and can I order from your website?
Thanks.

 

Welcome to the LGM P0153 / P0133 club !
It is very pricey to get in but not very exclusive unfortunatley.
Consider yourself fortunate that you are not throwing more front 02 codes like me (do a search).
I have posted with this problem numerous times (appropriately) & read the thread on the faulty ($39) adapters LGM sells that you HAVE to buy.
LGM has openly stated that they "do not know why this occurs on some cars."
Your options are to:
Look for a leak
Hope a wire is touching and you can fix it
Buy new 02 sensors ($) and hope that fixes it
Hope time fixes it
(Lucky that you need them to work correctly for your car to run correctly !)
So there IS a faulty adapter as well(?) is there a group purchase on that faulty adapter LGM ?

Shoulda went with Kooks.


[Modified by Mirek, 9:46 PM 4/6/2004]

 

there are only a few reasons that the 133 and 153 codes are set. One could just be a bad 02 sensor. We have found it on many early cars. We have put new 02 sensors in and cured the problem. THe problem is that Chevy charges alot for them, and some just go bad. If you have your old front 02 sensors, we can send you an extension adapter for that to see if that cures it when your use your fronts with the extension.
The original reason that we started using the rear 02 sensors as fronts was because the rears had a higher wattage and they would work fine in the further back location of the 02 sensors on the LG headers. If you do not have one of the new versions of that rear 02, it will not have the higher wattage. You need to look at the number on the side of your 02 sensors. The higher wattage/better heater elements have a 139 number on the side. the fronts have a 75 watt and some of the older rear 02s had a 98watt. The 98 will give you trouble most of the time. So you need to get a newer version with the 139watt stamped on the side.
I am sure that you could even get some used ones from the forsale section.
GM had problems with the 98watt 02 sensors. that is why they changed to the 139watt units.

If any of you with any codes with our headers want new adapters, I will send them to you at no charge.
I have sent out a few and not had any feed back yet.

Please check the wattage rating of your 02s to see which ones you have.

There seem to only be about 3-4 % of the cars having any issues with this, and I am comitted to fixing this.

Please give me a call and we can help solve your problem.

Thanks

Lou G

 

Lou,
I am very concerned about this problem. I just ordered a set of headers with cats from you and expect them in by the end of this week. I just hope I am not in the 3 to 4% bracket. If so I feel pretty confident you will take care of any code issues due to the header install.

 

Merek,
I am really sorry you are experiencing these problems! I am sure Lou will rectify for you. Please keep us all posted as I just placed an order and your post has me very concerned.

 

Couple of comments:

1. These codes can occur with any number of headers. Over the years there have been a huge number of threads on several forums (e.g. LS1.tech, LS1.com and so forth) about this. No one solution has been found (except perhaps editing out the codes with LS1 edit). This is NOT unique to LG's, though perhaps exacerbated by the true long tubes.
2. Consensus is to go through the trouble shooting steps outlined by Lou. If all fails, edit the codes.
3. The car will run fine regardless, ultimately what you want is for the annoying light to go away.

For what it's worth, I had these codes when I had TTS headers on a H/C package. Went away with tuning. Codes came back when I went to LG's on by 436: went away with Lou's adapter and swapping the rear O2's to the front just as Lou said.

Best bet: keep working with Lou.

Hope this helps. Good luck: you'll like the headers.

 

Yes there are many threads on this and the fact is you cannot "ls1 edit out" your front o2 codes & you do need them for your car to run correctly. Spreading misinformation is bad.
That is a fact.

Lou -- Thanks for the response my car is a '00 - sorry about the rant but it is very frustrating to constantly get that light. I do believe new rears "might" fix the problem but they are very pricey and per this thread - not always a cure. I handled mine like china when they were out.
Too expensive to buy more parts because they "might" work when the old ones are not broke.
I'm already in for a substantial sum of $$.
If you want to send new adapters (or 02's hehe) thanks I'm in your database under Mirek & I'll post the results....As I'm sure you know I've taken the lead in bitching about this problem here but not on the other forums or in an innappropriate manner (i think).

 

mirek,
Have you had your car tuned since installing the headers?
I have a 2002 with LGM headers and cam. I had my car tuned using LS1Edit and I have not gotten a single code since the install.
I think the newer O2 sensors and tuning will cure you issues. Purchasing the O2 sensors seems like a small price to pay in order to eleviate all the frustration you are suffering from due to the CE light. Best of luck on your fix.
:cheers:

 

Thanks Man.
No I'm untuned. I mean the car runs awesome but I know it is not running optimally. Tuning is 500+ in my neck of the woods + I am waiting to get my LS6 intake (I know I know) before that. I gotta wedding (mine) to pay for in June so the Fiance is cutting back my mod budget !!
The worst thing is i just came into some loot and I was going to order my ls6 intake first thing this morning & I was re-reading all the threads getting all excited (you know) but there was a spike in my "cost column" late last night & no LS6 intake for me unless I can find one on the el cheapo !!!

Anyway the headers sound, install and are built awesome but that stupid light I did not expect and I tried everything but new o2's.