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-   -   Code p0420 options (https://www.camaro5.com/forums/showthread.php?t=466464)

Geelouise 09-11-2016 01:52 PM

Code p0420 options
 
So here is the deal I've been having a lot of trouble with my catalytic converters. i had replaced the right side (bank 2) converter about a year or so ago but it was under some kinda warranty,, I didn't pay of out pocket. Recently I received the dreaded p0420 engine code so the shop I took it to said that the converter was bad. It was bank 1.,,he told me that it needed to be replaced but I'll be honest I didn't have $1000 to spend on a new converter so he told me he would hollow or gut the cats. I said ok but how will I pass my emissions test? He told me that I can run the gutted cats since my inspection doesn't go out until next year.. drive it until I can afford to get a tune and when I go to get it inspected they will see that there is some cats in place even tho they don't function so I'll pass. Is this legit?? I don't wanna fry the engine by driving it daily with no tune either

TooCool5 09-11-2016 02:15 PM

I would not do this, This code relates to threshold efficiency of the cat is beyond limit.

It is sometimes fixed by cleaning the MAF and or changing the rear 02, running top tier fuel etc..
Your call.

CFD 09-11-2016 02:22 PM

Many times failed converters are the result of other problems up stream. Gutting them may alleviate the code but not necessarily the root problem so maybe further diagnosis is needed.

Geelouise 09-12-2016 11:57 AM

Quote:

Originally Posted by CFD (Post 9305422)
Many times failed converters are the result of other problems up stream. Gutting them may alleviate the code but not necessarily the root problem so maybe further diagnosis is needed.

He had told me it could be from reeving the engine,, is that true??? I mean I get on the throttle a lot but I've done that on a lot of cars and never had converts failing

Geelouise 09-12-2016 11:58 AM

Quote:

Originally Posted by TooCool5 (Post 9305414)
I would not do this, This code relates to threshold efficiency of the cat is beyond limit.

It is sometimes fixed by cleaning the MAF and or changing the rear 02, running top tier fuel etc..
Your call.

Yeah I'll just wait until I can get the tune,, so do you think it's ok to hollow the cats out get a tune and I'll still pass emission testing in tx? I've seen some guys on this website do it but idk if it's smart. $1000 for a converter I just can't do right now but this is my DD

Geelouise 09-12-2016 12:37 PM

Also just something to throw out there this AM my car isn't showing there's a check engine light. No codes,, so I'm wondering if I should get a second opinion on if the car has a bad converter

Jylee 09-12-2016 01:05 PM

The CAT is warranted for 8 years and 80k miles.

justa25thTA 09-12-2016 03:29 PM

get some anti-foulers from the auto parts store. Cheap enough to try and they cured my code.

Eddiefuzz 09-12-2016 06:47 PM

Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

1Coopgt 09-12-2016 06:51 PM

Quote:

Originally Posted by justa25thTA (Post 9307090)
get some anti-foulers from the auto parts store. Cheap enough to try and they cured my code.

What the hell are Anti-Foulers ? Link please ?

Geelouise 09-12-2016 09:12 PM

Quote:

Originally Posted by Jylee (Post 9306854)
The CAT is warranted for 8 years and 80k miles.

That's how I got one of the cats replaced but I'm well over 100,000 now

Geelouise 09-12-2016 09:13 PM

Quote:

Originally Posted by Eddiefuzz (Post 9307500)
Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

Well shit maybe I just freaked out over nothing

justa25thTA 09-13-2016 09:19 AM

Quote:

Originally Posted by Eddiefuzz (Post 9307500)
Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

Won't pass inspection (in Texas anyways) because the monitors won't be ready.

justa25thTA 09-13-2016 09:20 AM

Quote:

Originally Posted by 1Coopgt (Post 9307514)
What the hell are Anti-Foulers ? Link please ?

https://www.walmart.com/ip/Dorman-42...&wl13=&veh=sem


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