I have a 95 gxe and the catalytic converter is leaking at both ends... also the rear o2 sensor is bad... so they both need replacement...

if i buy a stock fit catalytic converter it will cost me $150 for the part plus labor.

i found a resonator/test pipe on ebay which is costing me half the price. and it also has the hole for 02 sensor. the seller still says that installing this pipe may not pass emissions.

passing emissions is not a concern for another year... if i install this resonator/test pipe and plug in a new o2 sensor will it atleast turn the code for the o2 sensor off... or will it still throw the code and not pass emissions as well... if it doesnt throw the code but fails emissions because of resonator/test pipe itself... i'm fine with that... as long as the cel will go off and wont throw a code for rear o2 ne more...

ne1 done this b4? is code 0707 still there?

 

how do u know that your o2 sensor is "bad". The exhaust leak may give you the code that the rear 02 sensor is noticing a problem, not necesarily that the sensor itself is broken... putting a test pipe should remove your code as long as its only exhaust leak related. I have the same problem but my cat only leaks at the back end so as long as i do a little clamping/welding i should be able to fix the leak next time i need to get tested

 

a test pipe "may not pass emissions"? it WILL NOT pass emissions. lol what a joke of a seller. anyways just get a new cat. you wont be killing the environment and your exhaust wont smell like shi7.

i suggest you replace both. you can buy a new o2 sensor (OEM) from courtest parts online. its $120 + shipping. if you need a new cat warpspeed and budget/LSS are good places to get em.

 

hydrocarbons=no bueno! get a new cat. budget has them for like $90 canadian i believe...

i dont suggest this. replace the cat. see if the O2 sensor code goes away. give it a couple weeks, you may need to drive on the highway also in order for the monitor to run...when my o2 sensor went bad the light would only come on if i drove on the highway. i could clear the codes and drive around town for as long as i wanted and there would be no CEL. as soon as i had 2 trips on the highway that bright orange b*stard would shine right in my face. although in your case, it should only take one successful trip to put out the CEL if there in fact is no problem with the o2 sensor.

 

well i know the o2 sensor is bad because the catalytic converter was rusted so bad taht the o2 sensor actually fell out of it o2 sensor bung and was scraped on the drive home. the 0707 code was never there until the o2 sensor actually fell out and was scraped.

budget? selling catalytic converters for $90 canadian... thats great news... but the question is... who's budget?? i've never heard of them... but will research.

no one answered the main question yet thou... suppose that i couldn't find anything else and i end up with this test pipe with the o2 hole... will the code 0707 turn off if the o2 is plugged into a test pipe... or does it have to be a catalytic converter.

 

I have no cat and no 0707.

 

cool... what did u do with the o2 sensor? did u insert it elsewhere?

 

btw i got new o2 sensors from e-bay... NTK's made in japan... $35-$40 CDN, i replaced the front right yesterday and i've noticed the difference. just waiting for more opinions and than will replace catalytic and rear 02.

 

budget is the old name for the company. now it is lssexhaust and i believe their site is lssexhaust.com (not positive, but pretty sure)

 

yup, bunged it in my test pipe.

 

cool... so a test pipe with an o2 bung will also solve my problem...

thanks for all the help guys... i will try my best to invest into a cat but if its not affordable... than i apoligize for polluting the world.
i guess... if the government really wanted us to use them they'd make em cheap... mayb some sort of an environmentalists tax refund for installing a cat...

 

the government does want you to use them. thats why you have to pass an emissions test. and i dont know how nmexmax hasnt gotten a code for that...the rear o2 sensor tests the efficiency of the cat. removing the cat should with out a doubt set a code.

correction: he said he doesnt have 0707...so....do you have a code for the cat nmexmax?

 

I know, strange. I thought it would set off a code but it didn't

 

yea that is very strange...the only thing i can think of is if you have stock y pipe maybe the precats are leaning out the exhaust gases enough that rear O2 sensor doesnt see a problem...other then that, i have no idea why you dont have one haha

 

It's not that complicated. I had a y-pipe so no cats were in place. The voltage oscillation was within spec(afr). That's what that means.