Hey gang,

A couple months ago I had a CE y-pipe installed on my car. I got mine from racingline and had to have it modified to fit on my AT car. Once that got settled everything worked fine for a month or so, although the SES (service engine soon) light did show up for about a week in there, but then went off by itself.

Then (and I wasn't sure if it was related) the SES light came back on & stayed on. The first week I didn't think much of it, the second week it bothered me, and by the end of the third week I knew I had to have it checked out.

So I did. The report is that the O2 sensor behind the header (as in: ON the y-pipe) had failed. Cost of repair was going to be $475 from the stealership to install a new one. Knowing I had done the exhaust work I told them no thank you because I figured if the old one failed, the new one would pretty soon as well. Not to mention that sounds like a rip off anyways.

So the question is has anyone else experienced this problem? And if so, what is to be done about it?

Is there in existence a modified O2 sensor for this purpose?

I gotta believe I'm not the only one with this issue to pop up, so thanks for your opinions.

 

I know they are very sensitive and have killed a few myself re intalling. Not sure if you can do this but get crc electrical cleaner from parts store and try to clean them. Otherwise buy new ones.Are the with ok, any fgrounds?

 

I thought about that as well. I've had it out before when working on the y-pipe so I could take a look at it.

My main concern is that if something else goes wrong I wont know it because the SES light will still be on. So obviously I need to find a solution.

Who else has the CE Y-pipe? How long have you had it and has your SES light come on as a result?

 

It really does depend on the code. After the code was reset, did it come back on? I had mine shut off after checked and it has never come back on as of yet. it wasnt an o2 sensor problem but a catalytic convertor problem (bc one is removed. Have the code reset and see what happens if not already done.

 

bro if I were you.... i would invest $50 bux and pull the trouble codes that the computer is giving...... I had the same mess happen to me and the very "intelligent" mechanic told me I had o2 sensor problems... come to find out after doing some research myself and purchasing a service manual from ebay that it was my AF sensor that was giving problems..... did some trouble shooting myself and come to find out that I had unpluged one of the sensors while doing work previously...... simple fix that the steelership quoted me 475.97 to do

 

Is it possible that the wires are touching the y-pipe and have melted, causing a short? Loose connection?

Could get it replaced by an O2 bypass/simulator.

 

great idea /p oint

 

Or get a cheap O2 sensor off eBay and bypass the dealers obscene price.

 

I've got a CE y-pipe and didn't have to modify it.. why did you? also, I did NOT get a check engine light.

also, I don't have an oxygen sensor downstream... only upstream ones. where is yours? after the y-pipe?

in either case, do them yourself, it's just a screw in sensor and then you plug the wiring harness in... and they're probably around $150 at most for a good one..

cleaning them is another option... try that before spending all that cash...

and don't spend $50 to get codes read.. go to a local parts store (Advance Auto or Autozone) and get them to read it for free... just ask for all the possibilities that could be wrong based on the code(s) that it reads... or you could write it down and post it here and we'll tell you.

 

Totally agree with all, including the question why your CE Y-pipe had to modified???

 

Yeah I have the CE y-pipe too and it was not modified to be installed in my 04 6sp.

 

only reasons I can think of for modifying it are: adding an o2 sensor bung, or bought the one for the 5AT tranny and has the 4AT tranny.. 4AT and 6MT use the same pipe, 5AT is different. hopefully not that reason though..

 

http://forums.maxima.org/showthread.php?t=529259 Dude is selling cheap OEM sensors here.

 

Hey gang, I've had problems with getting online in the last few days and was out of town for a bit there as well.

Thanks for all the feedback I really appreciate the range of ideas and options. As soon as I have some time to check it out I will try to inspect it, then clean it, then if I have to replace it I will do it myself for sure.

The reason I had to modify it was because I was sent the Y-pipe for the MT, even tho I ordered the AT version. Taz paid for the tweak, but there is a possibility that in the interim the 02 sensor - which is on the Y pipe after the header - was damaged or something.

thanks again!