Make sure that the exhaust is completely off and cooled down.

How to fix a catalytic converter without replacing it. Then pour this additive into your fuel tank. Take your car for a spin: It may be cheaper to clean the one you already have than to buy a new one.

However, the catalytic converter may fail for many reasons. The catalytic converter can fail due to severe damage or age. If the converter is severely damaged it may have to be.

The cleaner is the simplest way to clean a catalytic converter without removing it. The easiest way to clean a catalytic converter without removing it is by using a catalytic converter cleaner. Fuel additives, like cataclean, are one of the first and easiest methods to try for fixing a catalytic converter issue.

Just add the product to your fuel tank and. Now take out the oxygen sensor from. The next step is to flush out your cat with hot water.

Soak the catalytic converter with a standard laundry detergent or degreaser in the heated water for deep cleaning. As crazy and unbelievable as this. This will clean all the junk inside and outside the converter.

It may not be possible to fix it without replacing it completely. Check the system from the intake manifold to the exhaust manifold. Fill the gasoline tank with catalytic converter.