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If the post cat 02 sensor is there to verify that the cat is infact there and working wouldn't a resistor accomplish the same thing as an 02 sensor (ie. trick the computer to think the car is running more lean after the cat) Has anyone done this? From what I understand there are 4 wires and two of them have to be spliced but I'm not sure which two. An article I read said that the black and purple with white stripe should be slpiced but I'm not sure if this is for GM vehicles. Does anyone know what the colour of the wires are on the post 02 sensor?
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1998 Camaro M5, Sports Appearance Package, K&N,CAI,Whisper Lid, Dynomax Superturbo exhaust,Carsound Converter.<p><a href=\"http://members.cardomain.com/canadiancamaro\" target=\"_blank\">http://members.cardomain.com/canadiancamaro</a> -
anyone?1998 Camaro M5, Sports Appearance Package, K&N,CAI,Whisper Lid, Dynomax Superturbo exhaust,Carsound Converter.<p><a href=\"http://members.cardomain.com/canadiancamaro\" target=\"_blank\">http://members.cardomain.com/canadiancamaro</a> -
A resistor is not going to help you. The PCM is expecting a rapidly changing reading to come from the O2 sensor. A resistor would just report back a constant voltage, which would result in the PCM thinking the O2 sensor is malfunctioning. SES Light would follow. Somewhere, I saw instructions on how to make an O2 simm, but I can't remember where...1997 Y87 Camaro with a motor and some stuff.Comment
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Thanks for the input.
What about a variable resistor - is there such a thing?
I'm not too familiar with resistors but wouldn't you get a constant signal if the resistor was too small (if small is the right word)? If you got one that was big enough to allow low currents through but limit ones that are too high wouldn't that work?
[ October 03, 2002: Message edited by: CanadianCamaro ]</p>1998 Camaro M5, Sports Appearance Package, K&N,CAI,Whisper Lid, Dynomax Superturbo exhaust,Carsound Converter.<p><a href=\"http://members.cardomain.com/canadiancamaro\" target=\"_blank\">http://members.cardomain.com/canadiancamaro</a>Comment
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How exactly does the 02 sim work?1998 Camaro M5, Sports Appearance Package, K&N,CAI,Whisper Lid, Dynomax Superturbo exhaust,Carsound Converter.<p><a href=\"http://members.cardomain.com/canadiancamaro\" target=\"_blank\">http://members.cardomain.com/canadiancamaro</a>Comment
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You can make an O2 sim. It does involve a resistor, but there is a bit more to it. The sim is a circuit you can easily build using a resistor(not sure what resistance) and a capacitor. The way it is set up the capacitor charges then discharges at a specific rate. This oscillation is what makes the PCM think the O2 sensor is actually working correctly.
I used to have a description/diagram of the circuit, will look to see if I can find it. The guys with Mustangs are well versed in this matter, they need them if they run true duals w/an x-pipe and no cat.
[ October 06, 2002: Message edited by: ucmeflyby ]</p>1997 Camaro RS<br />White w/T-topsComment
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