Are you struggling with the P0420 code and want to clean your catalytic converter, but realize that it’s a lot of work to remove the catalytic converter, and you want to do it without removing it?
Then this article is for you. We will discuss how to remove the catalytic converter without removing it from your car to get the best results, and you may save a lot of money by doing so.
If you want to learn more about the P0420 code before cleaning it, you can check our article about this here: P0420 code.
There are some things that you have to consider before trying to clean your catalytic converter. In a lot of cases, the parts inside the catalytic converter will become loose. If this is the case, you can’t repair your catalytic converter without removing and replacing it.
1. Too clogged
If your catalytic converter is so clogged that the engine will not run, you have to remove the catalytic converter and either use special tools or replace the whole catalytic converter.
2. Check/listen for loose parts
You can take a rubber hammer and hit your catalytic converter carefully, and listen to ascertain if there seem to be any loose parts inside it. If you can hear loose parts, I recommend removing and inspecting the catalytic converter because the loose parts could come even looser and clog your exhaust pipe totally, which may cause your vehicle to stop while driving.
3. Purified catalyst
Remember that your catalytic converter may have been cleaned inside, and the parts inside it may have blown out from the exhaust pipe. This can be tough to see without removing it, and if you suspect this, remove the catalytic converter and check it.
4. Oil consumption
Your catalytic converter may have got clogged due to internal oil consumption, caused by oil entering the cylinders and getting combusted and burned inside the hot catalytic converter.
If this is the case, you should always repair the internal oil leak before using this cure, as it may only work for a short time until the catalytic converter is clogged again. Common symptoms of an internal oil leak are clogged crankcase ventilation, broken valve seals, or piston rings. Always check the crankcase ventilation first.
How to clean your catalytic converter without removing it
If you have checked and listened carefully for any loose parts inside your catalytic converter and your are sure that the car is not burning oil, follow these few steps to clean your catalytic converter:
Total Time:10 minutes
Step 1. Get Oxicat Catalytic converter cleaner
The easiest way to clean a catalytic converter without removing it is by using a catalytic converter cleaner product. One product we recommend is the OXICAT – Oxygen Sensor & Catalytic Converter Cleaner.
You can find more of these products in our guide: Best Catalytic Converter Cleaners. You tap it into your fuel tank, and it does not matter if you have petrol, diesel, or hybrid car. This will help clean the catalytic converter; it will also clean your O2 sensors and the whole exhaust system.
Remember that this product will not repair mechanical faults inside your catalytic converter if it’s cracked, broken, or too clogged. This is a cleaner for a slightly clogged catalytic converter that lost its power due to time.
Of course, you can also use other brands of catalytic cleaners, but this one has worked best for me so far.
Step 2. Pour the Catalytic converter cleaner into the fuel tank.
Check the cleaner’s manual and pour in the exact amount of cleaner into the fuel mentioned in the manual. Ensure that you are using the required amount for your car type and engine, so you are not using too much of the product – this can cause even more damage to your catalytic converter in some cases.
Step 3. Take your car for a drive
Drive your car a couple of miles to see if your car runs better than before. You can also try to drive your car at high RPM’s over 3000 for a long distance to get the catalytic converter really hot to burn out the clog inside it.
Always keep an eye on the coolant temperature though to make sure that you are not overheating the car.
The Oxicat did not work for me, what to do now?
If you tried the Oxicat catalytic converter cleaner, but the problem still persists, there is not much more to do than removing the catalytic converter to inspect it and to make sure it looks okay. Remember that there can be other causes of the P0420 trouble code like faulty O2 sensors or exhaust leaks and the problem may not be in your catalytic converter.
Removing the catalytic converter is often quite easy on most cars if you can get the rusty bolts loose. In some cars, the catalytic converters are installed directly on the turbocharger, and in these cases, the removal of the catalytic converter may be more difficult.
If you still think that your catalytic converter is clogged and looks okay while inspecting it, you can try to clean it in a bath with water and lacquer thinner. This does sometimes work, and it may save you some money.
Check this link for Amazon’s version of lacquer thinner:
If you tried both the Oxicat cleaner and lacquer thinner, and you can not see any visual signs of damages, but the problem still insists – There is no option other than replacing the catalytic converter.
You should also check for other problems – it might not be the catalytic converter causing your problem.
Catalytic converters are often expensive, and this is because there are noble metals inside them that cost a lot to produce.
Catalytic Converter delete
hi. what would you like to delete the cat for performance and or loudness?
....well there a lot of options I considered when I deleted my cat. you can gut the cat and keep it there (could rattle) you could gut the cat and run a piece of pipe through it (still could rattle ). or run straight pipe. the only reason I deleted the cat was because of my turbo, the stock cats are pretty high flow unless its clogged and you dont pick up too much performance deleting it with the na setup. so i ended up with just straight pipe no cat =[ and deleted the 2nd o2 sensor and had lime-swap.com tune my pcm and also delete the error codes for the 2nd o2 sensor. luckily i have an emissions exemption now...
i just want to fix the clogged cat but if i can get some more performance that is gonna be nice but i think its not easy to tune my pcm for the o2 sensor so maybe i must change the cat
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How to Replace the Catalytic Converter on a Trailblazer
Replacing the catalytic converter on the Chevy Trailblazer is a great job to tackle at home. The converter bolts in place between the front exhaust pipe and the muffler, making it easy to get to and change. The converter is a little heavy, so be careful when you remove the bolts to make sure that it does not fall on you. Replacement converters are available through your Chevy dealer, as well as from most major auto-parts stores.
Raise the front of your Trailblazer with a jack and support it on a set of jack stands positioned under the frame rails. Slide under the passenger's side of the vehicle and locate the catalytic converter in the exhaust pipe between the engine and the muffler.
Locate the oxygen sensor in the converter. Follow the wire from the sensor to the wire harness connector and disconnect it from the harness. Place an oxygen-sensor socket on the sensor and remove it from the converter with a ratchet. Set it aside.
Loosen the two bolts on the mounting flange between the rear of the catalytic converter and the exhaust pipe using a socket and ratchet. Remove the bolts from the flange and pull the pipe aaway from the converter. Push the pipe aside.
Move to the front of the converter and remove the two mounting bolts between the flange and the front pipe with a wrench. Pull the converter out and remove it from under the truck.
Position a new converter in place under the truck. Lift the converter up into place and install the retaining bolts from the front pipe to the front flange on the converter. Leave them loose for now.
Position the rear pipe up against the rear flange and install the rear mounting bolts loosely. Tighten the front bolts by torquing them to 33 ft.-lbs., then tighten the rear bolts to 33 ft.-lbs. as well.
Install the oxygen sensor from the old converter into the new converter and tighten it with a oxygen sensor socket and ratchet. Connect the wiring harness connector from the oxygen sensor to the wiring harness connector on the truck. Push the connectors together until they lock in place.
Raise the front of the truck off the jack stands with a jack. Remove the stands from under the truck, lower the jack and remove it from under the truck.
- "Chevy TrailBlazer Service Manual"; General Motors Corporation; 2006
Things You'll Need
- Jack stands
- Oxygen-sensor socket
- Socket set
- Torque wrench
Christian Killian has been a freelance journalist/photojournalist since 2006. After many years of working in auto parts and service positions, Killian decided to move into journalism full-time. He has been published in "1st Responder News" as well as in other trade magazines and newspapers in the last few years.
More ArticlesSours: https://itstillruns.com/replace-catalytic-converter-trailblazer-7235894.html
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