Changing a catalytic converter honda civic

We doused them with penetrating oil, let them sit for a little while and now we're just removing them with a socket, ratchet and extension. Now, right here there's a 14mm bolt, just go ahead and remove that. Under the hoses, on this bracket, there's a 10mm bolt.

Go ahead and remove that. Then pull those hoses back once you have that bolt removed. Now lift your vehicle and under here you'll see your downstream O2 sensor. You want to use your O2 socket and just remove that. Again, if your O2 socket isn't working, you can always cut the wire and use a regular one but you will have to replace the sensor. Next to where your downstream O2 sensor is, there are these three 13mm nuts go ahead and remove those. You can see we doused them with penetrating oil.

If you break these off, it's not too big of a deal because the new manifold and catalytic converter assembly from 1A Auto comes with new studs. Once those bolts are removed, you can maneuver your catalytic converter up and out. On the right, is the old catalytic converter. On the left, is the new one from 1A Auto. You can see that the gaskets are exactly the same and on the catalytic converters, the heat shield is a little bit different but they'll mount exactly the same.

Before you can install the new catalytic converter, you need to first remove these two 12mm bolts so you can get this shield off. Next you need to remove this 14mm bolt securing this bracket to your old catalytic converter. We'll fast forward as Don does this. Now to remove this lower gasket, just use a flat blade screwdriver and pry it out and put your new one down into place. Pull off your exhaust gasket and put your new one into place there. Just take the nuts off the studs on the bottom and put them aside, then lower your manifold and converter assembly down in.

Make sure that you line up the lower studs into the exhaust pipe flange and get them into place. Once you make sure those are in place then line up your top ones and push the manifold on. I'm just going to keep fast forwarding here as Don puts all the nuts back in place and preliminarily tightens them. Use a torque wrench and torque all those nuts to 25 to 30 foot-pounds. That would make it a challenge to track actual faults through this warning light. You would create an emissions concern.

The goal of the catalytic converter is to remove the high levels of carbon monoxide created through fuel combustion to replace it with carbon dioxide. You want this device to scrub these gases for you because they contribute to global warming issues, acid rain, ocean acidification, and other forms of environmental damage. There is the concern that the fumes from your exhaust could reach the vehicle cabin too. It may do more than induce a headache.

It could create life-threatening situations in some circumstances. You will create more noise when you drive. Although the sound of an engine which is not held back by a catalytic converter sounds healthy, it can also become unhealthy from a noise perspective. If you have the windows down and the engine full, you might exceed decibels without this device. Any noise above 85 decibels is potentially dangerous to your hearing health. See above. You may use more fuel without a catalytic converter.

The catalytic converter does more than convert harmful gas into something less dangerous. It also squeezes a better fuel economy out of some vehicles. However, some people have reported that once they remove this device, they discover that their miles or kilometers per gallon actually go down. The most common explanation seems to be that they are burning more gas because their O2 sensors are not reading correctly and therefore requiring more fuel usage.

Relatedly, there are reports that a notable amount of backpressure is lost. If your vehicle must go through an emissions test, then it is essential to remember that there is a visual test in addition to the performance evaluate. Testers are usually required by law to report failures like this, which means an uncomfortable conversation will be waiting for you when you try to drive away. A failure may cause your vehicle to be impounded too.

You will lose your low-end torque without a catalytic converter. The catalytic converters in the past were very restrictive because the exhaust coming from the combustion process was extremely toxic. Modern engines create less of an impact, which means the device creates almost the same effect as a straight pipe for the average vehicle on the road today that is less than 10 years old.

Your horsepower gains will be slightly better when you run full out. Since this is only legal for off-road vehicles, the benefits may not be the type you want. Sometimes, the catalytic converter absolutely needs to be replaced like if it's broken internally or melted down. If you have to replace your catalytic converter, make sure it lasts as long as possible with these tips. Actively scan device characteristics for identification.

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