Catalytic converter replacement Santa Rosa

Catalytic converter replacement Santa Rosa

When replacing a catalytic converter in California there needs to be an executive order stamped on the converter, This number is cross-referenced by the smog technician to make sure the correct converter is installed.

When is the Right Time to Replace Your Catalytic Converter? A catalytic converter plays a crucial role in slashing down dangerous emissions from your car. An efficient and superior converter works effectively in transforming car emissions into water vapor that is not harmless to the environment and CO2. A dysfunctional converter, on the other hand, will make your car an evil instrument for air pollution. In the practical level, a broken converter will cause your car to fail the smog check and a plugged converter will also cause your car to lose power. Hence, it is important to know when is the right time for catalytic converter replacement.

How the catalytic converter works

The catalytic converter increases the surface area that the exhaust emissions pass over it in order to continue the burning process. Through a catalyst reaction with precious metals, the emissions that were once harmful are converted to less harmful CO2, which is a byproduct of complete combustion. Vehicle emissions are reduced by 50% to 70% by the catalytic converter.

How to know if Catalytic converter is defective

A defective converter is a very common smog failure. There a few ways that a catalytic converter can be tested.

Testing catalytic converter with heat gun

When a catalytic converter is working it will be hotter in the back because the burning process is continuing. The temperature measured with an inferred heat gun should be 50 degrees hotter in the rear when the vehicle is heated up.

Checking catalytic converter with cranking CO2 test

Step 1: Warm up the converter by holding the vehicle at 2500rpm for three minutes.

Step 2: Disable the ignition system on the vehicle. – make sure the fuel system is not disabled.

Step 3: Crank the engine and see if the CO2 is above 7.5%. Since the converter continues the burning process when it is working you will see a rise in CO2 when the converter is working.

Checking catalytic converter with an intrusive test

This test is the industry standard. Emission measurements are taken before and after the catalytic converter. There should be an emission reduction of at least 50% after the catalytic converter. The vehicle needs to be in fuel control and not be misfiring in order to do this test.

Vehicles equipped with OBD2 will check catalytic converter

If the catalytic converter is bad the check engine light will come on.

Since a Catalytic converter uses oxygen when it is working the computer will monitor the front O2 (before cat) sensor and compare it to the rear(after cat). If the converter is working there will be a decrease in oxygen sensor activity on the rear sensor.

Broken catalytic converter

Catalytic converters can plug up resulting in loss of power. If your vehicle is low on power a simple back pressure test of the exhaust system will help verify if your problem is related to a restricted exhaust system or not.