I don´t see how the air can get thru the wire. Wouldn´t there be a hose if the computer needs air? It must have something to do with electrical resistance due to metalic reaction in the sensor when exhaust gas flows around the sensor.
And soldering would be better for sensors, twist the wires together, solder and then heatshrink to insulate them from grounds and humidity. Sensors usually have something to do with resistance, and buttplugs and crimpconnectors mighr change the value the gauge is receiving. Soldering has very little effect on the flow of the wire, and its a lot more secure way of connecting the wires, there is no plug for the wire to wiggle out of.
