his touch

I would like to bypass the rear o2 sensors on my exhaust as it is throwing a P430 code. The passenger side sensor is bad. I know they sell the stuff for this for $90 .

Does anyone know the value of the resistor to put in line so I can make my own? Also it has 4 wires. Wich sires do I use?

Thanks
Ron

ZylaRace

I have never heard of a resistor swap working here. What you want are O2 sims. Check the Vette catalogs. They should be listed.

silver & red CE

It'll cost you more for the sims that two new O2 sensors. If one of your sensors has failed, it's likely the others aren't in great shape. The PCM has almost no way of detecting a soft failure of the O2 sensors, they have to be good and dead before the check engine light is set. Soft failing O2s cause the PCM to run the engine rich, killing gas mileage/performace and often are the cause of emission test failures.

I would replace the front O2s with new ones and move the old fronts to the rear.

Eric

his touch

But aren't eh sims simply a resister? If so, I can make my own to replace my rear O2 sensors with resisters and save $100.

As much trouble I had getting to the O2 sensor on the passenger side, I would not move a used one there and risk it going bad. I know, it doesn't affect your performance, but it does set a code.


Ron

silver & red CE

No, an O2 sim is a square wave generator running at ~1Hz between 0.3V and 0.9V.

In that case, I'd replace all of them. If you've lost one, the others are on their way out. The PCM doesn't do a good job of detecting soft failing O2 sensors, replacing them is good preventative maintanance.

Eric