Catalytic converter in my 2000 honda civic gone bad??
When i had my car inspected last year, they told me the catalytic converter was bad or something and needed to be replaced before it would pass this year. Managed to get to computers to reset and that one didnt come up last year and it passed.. Well anyways, I have a friend who works on cars and what not and said there was a computer he could bring from work to find out if it is the cat converter or another part that is only about $60. Anyone know what this part would be? And also, what is the cheapest way of going about this? Any tips or tricks to getting it fixed?
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Re: catalytic converter in my 2000 honda civic gone bad??
The best way is to replace the cat, it could be the 02 sensor but would suggest you replace the cat from a aftermarket car parts store, they will coast about $80.00 tops and I would replace the 02 sensor as well after 8 years the 02 sensors get what is called lazy 02 syndrome and does not cycle fast enough to keep up with the changing fuel needs of the computer. If you replace the 02 sensor you will get better fuel mileage and will not risk plugging up the cat in the near future, And if you had any missing in the engine you have damaged the cat so replace it so you don't have to much back pressure, you can check the cat with a temp probe to see if it is functioning or not to be sure, but for a total of $100.00 bucks you will save yourself time and effort in the years to come, and itf the cat plugs up it won't run so change them both. hope this helps.
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I don't think it is your catalytic converter because your light usually flashes and a bad cat I never heard of them causing a misfire. I ran your other code it is for a faulty EGR system. Exhaust gas recirculation excessive. You are getting too much exhaust gas back in the system. This will cause your misfire. Go-to a trusted mechanic and have them check out your EGR system.
Yes and No. The EGR can cause the car to idle rough and or stall. I am assumeing the check engine light was on and set code for EGR and Catalytic Converter. If the engine isn't running right it is possible the cat won't work right due to improper air fuel ratio that the EGR is causing. To do repair proper the EGR should be fixed then clear codes and see if the code for Catalytic Converter. There are other reasons that would your car to idle rough or stall I am just assuming that this mechanic got codes or tested the EGR right.
Your Honda is probably very high on mileage. The P0420 code indicates that the catalyst system is operating below the efficiency threshold. In English, your sensors are telling your ECU that the catalyst in the catalytic converter is worn out. A new catalytic converter is going to be big $$$.
It is not going to disable your car, but if you live in a state requiring emission testing to pass inspection, your car will probably not pass the next inspection.
You can get a code reader (the Actron CP9575 or CP9175; both work well for less than $150.00 USD) from most auto parts stores or Sears and try clearing the code. In all liklihood, clearing the code this way will not fix the problem and the CEL will illuminate again.
The P0420 code is set when the oxygen sensor after the catalytic converter gives a reading the same or very close to the reading of the oxygen sensor(s) before the catalytic converter.
There are usually three possible causes... The front oxygen sensor (before the cat) is giving an incorrect reading. The rear oxygen sensor (after the cat) is giving an incorrect reading. The catalytic converter is not working properly.
Since you recently replaced the cat, the logic points to the sensors, but it could be the cat again. Aftermarket converters are usually smaller than OEM and don't last as long.
For a more thorough description of the code and troubleshooting visit http://www.obd-codes.com/p0420
Our Subaru encountered this issue several years ago under warranty. The first time the dealer replaced the front oxygen sensor. This was the cheapest repair and since it was an intermittent problem I am sure they hoped to delay the issue until the warranty was up. The second time they replaced the catalytic converter and we haven't had any more issues.
Hey I had the same code and I have a 2000 honda civic lx. My cousin
works at honda and drives a '96 honda civic and he has had that code
before on his car as well.
First thing he came up with was that the catalytic converter was
cracked. We checked mines, and lo and behold, that's what it was.
Look under your hood, and there should be a catalytic converter with a
sensor sticking out of it. It is connected to the exhaust manifold and
the sensor sticks out of the heat shield. Around the sensor, look for a
crack. If there's a crack, that's your problem.