Updated at: 20-04-2022 - By: micdot

Catalytic Converter: How to Fix It, Without Getting a New One

If you want to learn how to fix a catalytic converter without having to buy a new one, this is the guide for you. The catalytic converter is part of your emission system and treats all of the gases that come out of your car before they go outside. The bad news is that catalytic converters can become blocked, which is something you don’t want to happen!

Can I fix a catalytic converter without replacing it?

Simple answer: YES! A catalytic converter can sometimes be fixed without having to remove it, but only if it hasn’t reached the point where there is no going back. You can tell it’s been damaged if it’s been changed in color, looks weird, or has a sulfur smell.

The easiest way to get rid of lacquer is to use lacquer thinner, but you can also remove it and clean it.


When it’s possible, you should clean parts of your exhaust and keep your car clean and well-maintained.

Article Roadmap consisting of areas we will discuss in this post:

It can be cleaned. How do you unclog the catalytic converter?

In this case, how do you clean a catalytic converter. No, a catalytic converter can’t clear itself. How can you fix your catalytic converter without having to buy a new one?

When you burn fuel, there is no way to avoid harmful fumes, so that’s the main thing. However, this can be lessened by using an exhaust system that turns these poisons into harmless gases before they go out of your exhaust. Metals like palladium can be used to do this. check out the Catalytic Converter Scrap Price List and Worth to learn more.

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It takes a long time to get the valuable metals out of catalytic converters.

A catalytic converter turns a bad gas into a good gas.

The Federal catalytic converters have a guarantee of 8 years or 80,000 miles if they don’t work for that long.

Most of the time, a Catalytic converter won’t break down and cause problems with your car.

Can catalytic converter be cleaned?

No, it can’t. After you make sure that the catalytic converter isn’t broken or too clogged to be cleaned, you can start to clean it. Water and lacquer thinner should be mixed together.

You don’t need to clean your catalytic converter, as the start of this page says. Furthermore, it could damage the internal catalyst, making this system impossible to use. The best thing to do is to have the catalytic converter replaced by a skilled person.


On average, 90% of cars that don’t pass emissions tests are misdiagnosed. The OBD-II fault codes that are linked to the failed emissions test will be read during the test. P-0420, a general code that tells you that the Catalyst System Efficiency is below the threshold, is the most common code that is found.

How to clean clogged catalytic converters yourself

A clogged catalytic converter might make you wonder if it’s something you can clean on your own. You can do this! All you need is enough gasoline and catalytic converter cleaning to get the job done.

Make sure you buy a can of petrol and a can of catalytic converter cleaner for your car. Some cleaners are made to work with diesel or gasoline engines, while others can clean both types of engines.

Start by following these steps:

As we said before, buying some gas will be a huge help to the whole process.

Fill the gas tank with cleaner. There will be a label on the cleaner that tells you how much to use and how much gas to keep in your car.

You might want to go for a drive. Then start your car and go for a drive. When you drive, the cleaner moves through your exhaust system and cleans it. For the best results, the cleaner’s label will say how long to drive. In this video, we show you how to fix a rattle in your catalytic converter heat shield.

Does catalytic converter cleaner work?

Keep in mind that if you clean the catalytic converter and don’t see any improvement, you’ll need to get another one. The cost of replacing your license plate is a lot, but it makes sure that your car is still legal and works well.

If you have an oil or cooling leak inside your car, you may not be able to clean it up. These leaks will keep getting into the heated converter and filling it with heavy smoke and soot, making it hard to work. Valve seal cracks, broken piston rings, and obstructions to crankcase ventilation are all signs of leaks in a car.

How to clean a catalytic converter? (Without removing it)

Here, I will show you how to clean your catalytic converter without taking it out of your car for the best results, and you’ll save money as well. Take these steps to start.

Step one: Buy a cleaner for your catalytic converter: You can clean a catalytic converter without taking it apart with the cleaner.

It’s the second step. A cleaner for the catalytic converter should be added to the gasoline tank: Pour the correct amount of cleaner into the correct amount of gasoline after reading the instructions on the cleaner.

This is the third step. Take your car for a spin: Drive your car a few miles to see if it runs better than it did before.

It may be cheaper to clean the one you already have than to buy a new one. Step 1: Clean your catalytic converter. This is good if you have a check engine light that won’t go away or a problem with emissions.

Can a catalytic converter unclog itself?

Does a catalytic converter that has been blocked work? Consider heating it up a little bit to help with the process.

Take a 30-45-minute drive on the highway in your car. You can go on a long drive so the exhaust can warm up before you start it. This means that the heat will burn away all of the deposits that are blocking the catalytic converter.

How to fix catalytic converter without replacing it?

You don’t have to pay for a costly repair or replacement of the catalytic converter; there are many ways to solve catalytic converter problems. In this part, we’ll look at three important alternatives to buying a new one. Before you spend a lot of money on one, think about these three.

First, you’ll have to get rid of your catalytic converter. Then, you can wash it. An unexperienced person might find this scary, but it isn’t as hard as you think. To start, you have to take it out. Then, the pressure washes away any dirt and grime that has built up inside.

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2: The fuel additives work very well, and they help a lot. A high-quality gasoline additive will help you fix or clean your catalytic converter and make your car run more efficiently. Try switching to premium or super-premium gas for a while to see if it helps or solves the problem with the engine. 3. Go for a drive in your car. This warms up your converter and gets rid of any deposits. For a few miles, drive as hard and as far as you can with the car. Then, drive your car on the highway and speed up right away. Run it at a faster speed for a few seconds, then let off the gas and slow down. There must be a lot of repetition. Here is a link to a post about this subject.