Ok guys help me out here.

look at this vfaq: http://www.vfaq.com/mods/O2bypass.html

honestly this just confuses me. anyone have a pic of theres done becuase this diagram does nothing for me.

and when it talks about the resistor of ~12 ohms? what does ~mean? and where do i find that part on radioshack.com.

i thought you could just put a 1megaohm 1/4 watt resistor on the black wire of the o2 sensor under the car? please halp me out guys. paul chime in brotha your the electronic genius here.

the tilde symbol ( ~ ) means "about". so a resistor of about 12 ohms.
I could not find a resistor like that myself, but perhaps this might work... buy three (3) 50ohm 5W resistors, Jameco #660551 http://www.jameco.com and wire them in parallel to eachother across the heater circuit. this will give you ~16ohms handling 15W.

Radioshack should have the capacitor and 1Mohm resistor in your local store.

I havent been in school in 10 years, so i hope i remember my crap correctly. Im sure Paul will correct me if needed.

I have not done this myself, as I still have a cat. I fully intend on getting rid of that piece of crap converter (thank you Indiana) soon.

Let us know what you do and how it works. Good luck.

The 1Mohm resistor and 1uF capacitor are used to fool the ECU into thinking it's getting a valid signal, while the power resistor (12ohm, 12watt, or any combination of resistors equaling this) is used to dissipate the enormous amount of power sent to the O2 sensor for the heating element.

I suppose you could leave the black wires (the heater element wires) connected to the O2 sensor to dissipate all that current, and cut the blue and white wires and then add the capacitor and resistor accordingly. While you would avoid the CEL, I don't see how this would be beneficial otherwise, though, as you'd still need the sensor.

You got it pretty much right, Locke. The intricacies of Ohm's Law are a little too complex to get into now, so just take our word for it on this one, Jake. The resistance and power dissipation ratings of the resistors are non-critical so long as the resistance is 12ohms or more, and they can handle the power running through them. I know you can use three 50-ohm/10watt resistors in parallel, which are usually in stock at most RadioShack stores.


You should be able to find the 1Mohm resistor and 1uF cap at any RadioShack too.

50Ohm/10Watt Resistors
1Mohm Resistors
1uF Metal Film Capacitors

By the way, ohms are a measure of resistance (which is what resistors are primarily measured in), watts are a measure of power (which is voltage x amperage, another important unit of measure of resistors and other components).

Here's a little diagram I made of how everything should be wired, with a corresponding electronic schematic. If you make this, make sure everything is insulated very well. A short in that heater element circuit could be disastrous.

As always, I recommend soldering as the method of connection, and heatshrink tubing and potting material/glue for insulation.

Also, if you're not comfortable making these, I can whip one together for you... Just PM me.