Any one convert there 1 wire oxygen sensor to a 3 wire one on the 302 efi motor? If you have what P/N sensor did you use?

Thanks

 

The difference between a 1-wire and 3-wire sensor is the presence of a heater circuit and a common ground. You could use a 3-wire on a truck that came with a 1-wire originally but you would have to supply power to the heater circuit seperetely. On later trucks this would come from the PCM, that allowed it to monitor the circuit and set a code and the check engine light to warn the driver if it developed a fault, but in your case that won't happen because there is no circuitry or programming in the PCM for a 3-wire sensor.

 

Thanks for the reply Conanski. I understand the wiring but was not sure what part number would work and when Ford started using 3 wire sensors. Do you know what car/truck I should get one from to do the conversion.

I did this to my Miata and used a sensor I think from a dodge mini van, still have the box with P/N. There was a write up on the Miata forum of a conversion using the dodge O2 sensor.

Thanks