How to clear code P0420 for good !!

In this video we put seafoam to the test with code
P0420, will it work? I guess you’ll have to watch the video. Below are the links of everything I used in this video.
Sea Foam
a.co/d/eV3u0W7
Anti Seize
a.co/d/0YzqznD
Dielectric Grease
a.co/d/0Lnnanq
PITTSBURGH AUTOMOTIVE 3/8 in. Offset Oxygen Sensor Wrench - Item 97177 hftools.com/app97177

[@crushrreviews]

UPDATE !!! Mileage is now 199,143 and the Check Engine light is still off 😮 that’s 1,701 miles since the seafoam treatment 😎👍🏼🔧

[@jrodzr1360]

Can’t hear well with the bell in background

[@freddymuniz514]

Good stuff 👍🏼

[@fengetaset9488]

I've been dealing with the same issue on a 2015 Volvo S60. The P0420 code keeps turning on and off. I'm going to see if I can do this and save the small fortune. Thanks.

[@samuelmeyerhofer2639]

I changed all my 02 sensors 0n my 05 wrangler and code never went away think i may try this

[@dogsplantscarsneatstuff176]

Crushr how often do they have you check smog in your state? Do you have to have all your readiness monitors completed to pass smog? I am glad you got around putting on a new cat. I just replaced mine. You saved a lot of money.

[@crushrreviews]

@@dogsplantscarsneatstuff176 hi, and thanx for taking the time to watch my video. I really appreciate that. To answer your question, In my state “NY” we’re required to pass a smog test every 12 months. We’re allowed the following, up to two monitors to be in a "not ready" state for 1996 through 2000 vehicles and one monitor "not ready" for 2001 or newer model year vehicles. I’ve been good so far. Check engine light still off with approximately 201,550 miles on the odometer as of today. Now a question for you, was your CAT replacement expensive? Did you do it yourself? Just want to know for myself if and when the time comes for me to replace mine. Looks like a pretty easy DIY project.

[@dogsplantscarsneatstuff176]

@@crushrreviews At 240K miles my cat finally gave up. I may try soaking my old cat in a solution like lacquer thinner. Before I talk about the putting on of a converter let me say how disappointed I am in the warranty of the new cats: 25K! The bogus 50K warranty is only for the outside of the cat. In a state like NY where you lay down a lot of salt I be enforcing the warranty may be next to impossible. I did the cat myself but was surprised at some of the things I had to go to. All catalytic converters are expensive as you well know so I got mine off of Rockauto. I buy a lot of stuff off of them and have had few troubles although they are not known for being great if things go south with a bad part. Here is the big education factor: If you get just a cat converter those old pipe expanders that you can borrow from Autozone or OreillyAuto such as www.oreillyauto.com/detail/c/evertough/rental-tools-evertough-1-1-2-to-2-7-16-inch-tailpipe-expander/ren1/67096/v/a/2625/automotive-car-2002-buick-lesabre?q=exhaust+pipe+expander&pos=7 are not usually success in expanding exhaust pipe to slide your cat into. This one works on std. 16 gauge exhaust pipe with my Ryobi std. impact gun: www.amazon.com/Astro-Pneumatic-Tool-78835-Stretcher/dp/B01JBICBJ4?th=1. It is $100 to $130 on amazon. Harbor freight has one for $150. The original Lisle tool sells for about $215. If you do a second one this tool will pay for itself in money and frustration. I used band clamps to connect it the new pipe. Although I originally bought std exhaust clamps they crumple the connections and make it more work to remove components in the future. I went whole hog and bought the catalytic converter, resonator line, and the muffler all new. In Calif. I had the choice of buying a new Magnaflow cat from Autozone or OreillyAuto for $1300 off the shelf. I chose the Rockauto's AP/Eastern for $540. I got mine without the resonator since it was cheaper to get the separate resonator with the extended exhaust and the muffler from OreillyAuto with their 20% off sale. The resonator assembly and muffler were another $290. I got the 2" and 2.5" in band clamps from amazon at half the price of the auto parts houses: $8 vs. $15. I have 4 six inch high railroad ties that I drove the car up on securely. I couldn't use my creeper since I am a overweight. Not a great idea. I also used permatex ultra red to connect the exhaust bands to the pipe. Jack stands would have been better. Although the resonator and the muffler were from Walker they look so much wimpier than the OEM original. Here is the only nice thing I can say. The last two smogs (two years apart as per Calif. smog check) I had to drive 250 miles to get my catalyst monitor to complete. With the new Eastern cat I drove less than 40 miles to get all of them except my evap monitor which we don't have to complete in Calif. Although I could have welded the joints I wanted to make sure everything worked before I finalized the deal. Hope this helps. i am thinking about getting a home lift for my cars since the 6 inches was close for my car. People report sales of Quickjacks on slickdeals if you are interested. Hope this helps.

[@dogsplantscarsneatstuff176]

PS with band clamps you want to check them for tightness after a short time due to the expansion and contraction of metals and the possible leakage of exhaust pipes. Hope I didn't miss anything. Feel free to ask more questions.

[@crushrreviews]

⁠thx for the feedback. Very much appreciated, I will definitely keep that in mind. Somehow sounds like a lot of work.

[@crushrreviews]

@@dogsplantscarsneatstuff176I actually own a Quickjack 5000, I honestly LOVE IT !! It has made working on my cars sooo much easier. Yes it’s up there in price, but it’s worth every dime. It’s made by Bendpak which has been around for decades and has been tested by the folks at Quickjack to show it far exceeds the rated capacity. I use mine without worries and no need for jack stands. I recently saw that VEVOR makes one also, but honestly it looks scary to me. I don’t think I could trust the VEVOR one. Maybe I’m wrong. But I’ll never know. The Quickjack goes on sale during FEMA and also COSTCO has good prices on it from time to time. They all ship from Quickjack anyway. I highly recommend. The Quickjack. I’ve owned it a few years now and it’s flawless. Maybe I’ll do a video on it for my subscribers. Haven’t done one already because there’s tons of videos on it.

[@jrodzr1360]

You are slowly creating a bigger and expensive problem for you. You are putting a temp patch on a problem. Budget yourself and fix it correctly. The Catalyst detects the mixture of gases created in the combustion chamber. Think about it.

[@crushrreviews]

Correction, the catalytic converter filters the exhaust coming from the exhaust manifold. It does not detect gases. That’s what the upstream and downstream oxygen sensors are for. Worst case scenario I would only have to replace the downstream sensor because the upstream sensor was removed for this treatment. It’s not uncommon for people to remove the CAT and simply soak it in soapy water to clean it internally. Explain to me how the cat detects anything? Lastly this car has high mileage as you can see in the video and the CAT has never been replaced. A little cleaning can’t hurt it any.

[@a69pizzoo]

What does it matter. If it works you saved a good chunk of change. So change it now and spend probably 750-1500 or throw a can of seafoam in and maybe save 750-1500.

[@a69pizzoo]

Very interesting results. We should make videos together.