p0420

[michael454rs@hotmail.com]

so i got this code today and from what i found out its a bad cat,buttttt i took my cat off like 2 years ago and never got this code until toda, and i replaced my rear o2 sensor like a month go because the other idk how its broke and the wires were cut so what gives. is it maybe because i havet welded this support that goes somewhere around that area and my exhaust pipe keeps on moving around?

[ssms5411]

Re: p0420

I wouldn't worry about the pipe moving around much, mine is only supported in the rear and I have no problems(don't have it supported on the tranny). I would just clear it and see if it starts coming back on regularly.

[michael454rs@hotmail.com]

Re: p0420

i cleared it today and it came back on i dont understand how after two years i came on hahahahahaha but idk ima chek to see if there are any leaks. any help is apreciated hahaha

[michael454rs@hotmail.com]

Re: p0420

i keep clearing the code and it come back its weird how i came on after two years after i took it off.

[Blizzard242]

Re: p0420

Yeah that is weird. Since you did remove your cat, the post cat o2 sensor is no longer necessary. You'll need an o2 sim or someone with HP tuners to delete the SES code so it doesn't show up in your dash lights.
That is weird that the code didn't come up for 2 years though because after I removed my cat it came on within a few days.

[michael454rs@hotmail.com]

Re: p0420

mine came on like two days ago i was like wtf how come it came on hahahhahahaha ima keep erasing it until the damm pcm gets the hint to piss off or something hahahaha over here where i live no one has the hp tuners so idk how ima clear that code. anyone here southern cali near san diego that has hp tuners hahahah

[Blizzard242]

Re: p0420

Here you go sir. http://www.afterthoughtsauto.com/o2sim.html

Just plug that into the o2 sensor harness and you're good to go. I have one on my DD, it works.

[michael454rs@hotmail.com]

Re: p0420

where exactly does this go in the o2 sensor before the cat or the one after. will this clear the chek engine light?

[Blizzard242]

Re: p0420

Do you have an o2 sensor before your cat? I'm a tiny bit unfamiliar with 97s which is what you have right? But it should go in the o2 sensor plug past the cat. If you do have an o2 sensor before the cat you may want to study on it a little more because I'm not sure what you'll want to do.

[fbodyrs96]

Re: p0420

what Connector Type do you need for a 96 3.8

[michael454rs@hotmail.com]

Re: p0420

i have a 97 and it has an 02 sensor before and after that cat

[Blizzard242]

Re: p0420

what Connector Type do you need for a 96 3.8

Get under your car and look at it. They have pictures on that website so you can tell which type you want to order. If you can't do that, maybe you could email them. I ordered mine a long time ago so I don't really remember which type I bought. But getting under there and looking at it yourself is a surefire way to tell which one you need.

[Blizzard242]

Re: p0420

i have a 97 and it has an 02 sensor before and after that cat

Ohhh man.. I'll look around a bit to see if I can find anything.. You should too but, hopefully someone who actually knows will chime in.

[michael454rs@hotmail.com]

Re: p0420

hoperfully cause i hate that chekengine light on hahahaaha

[Silverblue7597]

Re: p0420

so do i. i also have a security light which also bugs the hell outta me.