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Post Info TOPIC: Will Seafoam help to clean a catalytic converter


Poncho Master!

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Will Seafoam help to clean a catalytic converter


I have been chasing multiple check engine codes with a trip to the dealer each time. It now seems that the code last read  indicates replacing the catalytic converter at a  cost of 1600 to 2000.

 

I have run one can of seafoam through the gas and am now on my second Seafoam tank.  Is the Seafoam going to clean the catalytic?

Or

Do I turn a blind eye to the check engine light?

 

2012 Hyundai Accent 5 door.

233000 km

 



-- Edited by oshawacliff on Thursday 7th of April 2022 03:28:55 PM



-- Edited by oshawacliff on Thursday 7th of April 2022 03:29:57 PM

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Cliff

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A Poncho Legend!

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Someone may reply differently but I would be more concerned that it would have the opposite effect and actually clog the converter.

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1966 Strato Chief 2 door, 427 4 speed, 44,000 original miles 



Canadian Poncho Superstar!

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at 232 k could u not buy a convertor from amazon or auto parts a universal one and get it changed out that price is outragous at least. usually they plug up and car runs like crap

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Canadian Poncho Superstar!

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I don't think you can save a plugged converter. A dirty or carboned one, maybe.

There appear to be more than a few pour in remedies available. Do they work, maybe worth a try Cliff?



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Poncho Master!

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Has the car been on the highway recently? Sometimes when driven in the city on short jaunts at low speeds the catalytic converter will become contaminated. A good run on the highway for an hour or so should get the catalyst hot enough to clean it out. When the e test was still being done this guy bought a Jaguar at an estate sale. It wouldnt pass the e test and the dealer wanted $2600 each for the catalytic converters. We took it out on the highway and drove the sh*t out of it. The check light went out and it passed the e test.

Paul

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Poncho Master!

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My sister lives a 4 hour trip away.

I've been thinking about filling the tank with another dose of Seafoam and going for a spin.  I had another car that showed check engine and a few good runs at 6000 rpm cleared the c/e light.

 



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Cliff

Done Hurryin

Like the larger type for my eyes. 

 

 



Canadian Poncho Superstar!

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Methal Hydrate 3% to 10% ratio in gasoline. you get it at Canadian Tire looks like same type of jug as varsol. Cheaper than seafoam too. I had a 98 Cadillac that would always fail Drive Clean but running Methal Hydrate got it to pass.

Warning, it is a super octane booster so that little Hyundai will really light up while you are running methal. Seat of my pants with my Northstar V8 felt like 50 HP added.



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1973 LeMans 454 "Astro-Jet"

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Uber Guru

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I dont think seafoam will hurt, Ive used it in several of my cat vehicles over the years without issue. Used it to clean out fi/carbs/valves when I had rough idle or similar problems, not a cat problem. Never used methyl Ray but sounds interesting.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic



A Poncho Legend!

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Is the code coming from the 02 sensor behind the cat? If so there's a cheat for that. You can buy "extenders" that screw into the 02 hole and you then screw the 02 into the extender. This takes the tip of the senor out of the exhaust stream and therefore prevents the error from occuring. This only works if in fact the cat is bad. Usually you get a "Catalytic Efficiency" fault. My old 96 Accord started throwing this code a month ago. I had to replace the factory cat 2 years ago thanks to it rusting and the aftermarket replacements barely have enough precious metal in them to work. Usually they stop working after a year or so. Sure enough my engine light came on with this code. I'm going to install the extenders once it warms up here. They are around 15 bucks on Amazon and likely available at NAPA etc.

Amazon Link: https://www.amazon.ca/dp/B07L65Q27J/?coliid=I1OLFLJATC5GGE&colid=3UPZO66JAKCDX&psc=1&ref_=lv_ov_lig_dp_it



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Uber Guru

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Can you cheat on 1 and 2? What are the consequences?

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic

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