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Ground Rat
03-17-2006, 02:42 AM
The one on my van is a 4-wire; were there facotry 4-wire O2 sensors? Does this mean it's a wideband?

5sp. mini
03-17-2006, 08:34 AM
no it has 2 grounds and a sig. and power / just like the 3 wire only i extra ground i think. AL

Turbodave
03-17-2006, 11:16 AM
Yup. it's got a signal ground, power ground, signal wire, and a power wire. The power wires just run the heater in the sensor, this allows the sensor to heat up faster and equals cleaner emmissions sooner.

Ground Rat
03-17-2006, 03:39 PM
OK thanks for the info.