Cats r cut off. How to create dummy o2 sensor.

[pmackiniv]

I have my cats coletely cut out, and I've heard rumors that there might be a way to trick the o2 sensor into making it believe everything is normal to keep the engine from running so rich. I always have to wait a bit when I first start up the truck for it to run somewhat smoother. If it's not the o2 sensor causing a performance problem, I was going to look into vacuum leaks. I also installed a cold air intake, some have said that May not be helping my case either. Open to all suggestions. Thanks.

 

[83 Bimmer]

it's not the rear oxygen sensors causing the problem, their only purpose is to check to make sure the converters are working properly. Are there any other fault codes stored in the computer besides the converter codes?

What kind of shape is your ignition system in?

Is the intake installed properly with the MAF?

Do you still have the factory fuel injectors or the updated injectors?

 

[pmackiniv]

If the MAF. Was installed backwards, would it still work?


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[saif najd]

I don't have the cats and yes I am getting this codes (p0430 and p0420) I am looking for a solution too

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[pmackiniv]

it's not the rear oxygen sensors causing the problem, their only purpose is to check to make sure the converters are working properly. Are there any other fault codes stored in the computer besides the converter codes?

What kind of shape is your ignition system in?

Is the intake installed properly with the MAF?

Do you still have the factory fuel injectors or the updated injectors?

I still got factory injectors. What would you suggest for upgrading injectors?


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[SunlitComet]

yes. and i have said it once and i will say it again. the rear sensors do play a minor role in effecting the fuel trims to ensure that the cats work the best they can to a certain degree.

 

[saif najd]

Honda owners have a way which is to place the rear Ox sensors away from its original place by using L shape steel tube so smoke well be way less than now

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[Gzes]

Yep a non fouler will help you

 

[83 Bimmer]

sounds like to me your running problem could be caused by either something going on with your ignition system or you might even have a leaky injector that's flooding out one cylinder over night and making it misfire for a while upon first startup.

as far as the cats go the cheapest and easiest way is to use a spark plug non fouler, you can search on google and find out exactly how to do it. Technically speaking though tampering with your emissions equipment especially the converters and oxygen sensors is illegal, if you get caught or not is a different story. Do it at your own risk

 

[pmackiniv]

sounds like to me your running problem could be caused by either something going on with your ignition system or you might even have a leaky injector that's flooding out one cylinder over night and making it misfire for a while upon first startup.

as far as the cats go the cheapest and easiest way is to use a spark plug non fouler, you can search on google and find out exactly how to do it. Technically speaking though tampering with your emissions equipment especially the converters and oxygen sensors is illegal, if you get caught or not is a different story. Do it at your own risk

I'm gonna try cleaning out the MAF first along with a non fouler to start. Injectors are super expensive for me right now. Those other two options are well worth giving a try. I appreciate the help man.


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