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HI, I have install a megan racing catalyctic converter.
I tried to use an O2 simulator but I think it does not work.
My question is how is the engine reactine to a missing secondary o2 sensor or to my originial o2 sensor pluged in other than telling me that there is a problem with my 3way catalyctic converter?

Since there is still the 1rst o2 sensor that checks the air/fuel ratio.. can the 2nd o2 sensor still mess up the engine with the air/fuel ratio?

Since it is starting to get cold here and the winter is coming I am thinking of just putting my original cat and maybee experiment next summer.

thanks for any hints

Simon

 
Rep Power: 812

nope the second sensor has no function in engine operation. only the first one determines a/f and ecu feedback. just find a mil eliminator that works. members here have em. its only important because if something else on your car goes wrong, you won't notice (since the cel light is already on).

 
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What is mil eliminator stands for?
Is it different than an O2 simulator?

 
Rep Power: 812

its malfunction (engine light) eliminator. it tells the ecu everything is okay with the cat.

 
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make sure the wires are connected like the instructions say. you did get instructions with it right? i got mine from this person on ebay http://cgi.ebay.com/ebaymotors/O2-Ox...spagenameZWDVW it worked good no problems what so ever. just icase yours doesnt work

 
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I wired it correctly, I found out the groud, heater groud, signal, etc.. it just does not seem to work.

Mine does not look like the one on ebay. It looks like a yellowish plastic cube with 3 wires coming out. It was suppose to flash when working properly but it does not.

anyway I order one from ebay for 12 that looks like the one ine the link

 
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i put on the megan high flow cat on my 2004 civic si and the next day i had a check engin light which was the Catalyst System Efficiency Below Threshold crap. not sure what to do now.