If i wanted to replace my catalytic converter in my hundai elantra 2001 what size do i need or what the information do i need in order to know i buying the right one???

Plug catalytic converter

I didn't know Texas was exempt from federal law? Federal emissions law requires the vehicles tailpipe emissions system to be intact and in working order in order for the vehicle to be licensed for on road use. If the catalytic converter was removed and you didn't tell the buyer, the buyer can hold you responsible for all costs to repair the catalytic converter. Removing the cat will also cause a never ending check engine light do to the wrong downstream O2 sensor readings. You are better off replacing the catalytic converter with either an o.e. or a quality aftermarket unit.

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P0422 - Catalyst below threshold.

Catalytic converter is clogged or out of medium.

Replace it.


ACTUAL DIAGNOSTIC:

Fault Code Definition
Code P0422 indicates that the Bank 1 Main Catalytic Converter's emissions efficiency has fallen below the minimum allowable limit. This threshold is tracked by a Catalyst Monitoring Oxygen Sensor located on or near the outlet of the Catalytic Converter.

Symptoms

* Check Engine Light will illuminate
* In many cases, no abnormal symptoms may be noticed

Common Problems That Trigger the P0422 Code

* Defective Catalytic Converter
* Engine misfires have damaged the Catalytic Converter
* Internal engine damage resulting in high oil consumption and/or a leaking Head gasket has damaged the Catalytic Converter

Common Misdiagnoses

* Oxygen Sensors are replaced when the real problem is a damaged Catalyst
* Catalyst is replaced when the real problem is internal engine damage, which is producing elevated emissions levels
* Catalyst is replaced when a misfiring engine is the real problem



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One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
Let me know if this helped, or if you have any additional information, problems or questions. Feel free to contact me at FixYa.com!

Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong

A fuse DOES NOT control the low beam headlights... a RELAY does.

Yes, you have to order the same size. You also need a coupler that joins the pipe to the Cat.

Order the catalytic converter for that make and model and you will get the right size, assuming that the installation was done at the factory and has not been modified.

could be a cat. or a bad maf sensor

HI
the catalytic converter is on the exhaust pipe near the engine
it is like the exhaust filter ??
ask me for more information.
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