Catalytic Converter Replacement Instructions?

Hello,

Here is a guide to help you step by step on how to replace the cat converter with instruction in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/catalytic-converter-replacement

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

That does sound like a normal price, but if you go with an aftermarket type converter it would be cheaper. The only problem with that is sometimes the mechanics may have to do some extra cutting and welding to get it on right. It is best to go with what you were quoted with factory converter.

Try checking the dealer first. My friend just changed his catalytic converter without the front pipes at the dealer. Original Catalytic converter cost $800.00 plus $200 in installation. I don't know how much is the front pipes.

I just checked the dealer's price for the front pipes. $875.00

So your $2k cost is about right as long as your mechanic installs original Toyota parts.

Causes Of Converter Failures

Fouling, clogging, melt-down and breakage of the ceramic substrate inside a converter are common conditions that can cause problems. Plugging is usually the end result of a melt-down, which occurs because the converter gets too hot. This happens because the engine is dumping unburned fuel into the exhaust. The excess fuel lights off inside the converter and sends temperatures soaring. If it gets hot enough, the ceramic substrate that carries the catalyst melts.
The unburned fuel may be getting into the exhaust because of a bad spark plug or valve, but an overly rich air/fuel mixture is another possibility. In older carbureted engines, a heavy or misadjusted carburetor float may be the underlying cause. But on newer engines with "feedback" carburetion or electronic fuel injection, the engine may not be going into "closed loop" (the normal mode where the computer regulates the air/fuel mixture to minimize emissions).
A bad oxygen sensor or coolant sensor may be giving the computer bogus information. A sluggish or dead O2 sensor will make the computer think the exhaust is running lean, so the computer will try to compensate by making the fuel mixture rich. A coolant sensor that always indicates a cold engine will also keep the system in open loop, which means a steady diet of excess fuel. But it might not be the sensor's fault. A thermostat that's stuck open or is too cold for the application can prevent the engine from reaching its normal operating temperature. So if your converter has failed and needs to be replaced, the engine should be diagnosed for any underlying problems before the new converter is installed.
Another cause of converter clogging and contamination is excessive oil consumption. Worn valve guides or seals can allow oil to be sucked into the engine's combustion chambers. The same goes for worn or damaged rings or cylinders. Oil can form a great deal of carbon, and metals present in the oil can contaminate the catalyst. A compression check or leak-down test will tell you if the rings are leaking, while a fluttering vacuum gauge needle will help you identify worn valve guides

Hello,

Here is a guide to help you test the catalytic converter on your car. There are two converters one is bolted the exhaust manifold and the other is under the car about midway.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please let us know if you need anything else to get the problem fixed.

Cheers

Use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers

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Yes it has 2 cats.

I guess you "could" drive it but I would replace them.

Hi there, I feel that you should not have to worry about anything as long as the cat is working and you have no emission issues.

Mark (mhpautos)