Soldering O2 Sensor?

[Shepper]

I've seen it mentioned a couple of times that you shouldn't solder the O2 sensor wire.

Can some one please explain why soldering would be a bad idea in this application?

[Lawrence Coppari]

I think it is baloney. It's not like a little heat would affect it. Electrical components can be troublesome. Surely not this.

[Eduardo Castrejón Elbjorn]

I ask the same question in my post about the 02 sensor because I don´t understand this:

Do Not Solder Wires!

Use wire crimps or Posi-LockÒ. All the latest BOSCH O2 sensors are air tight. But the O2 sensor must have a clean air supply to work. It breaths down the center of the multi-stranded wire(s). Solder and solder flux will close the air-gaps between the strands of wire and the O2 sensor may malfunction.

[awilson40]

I soldered mine and now I'm getting very weird readings, slow responce after running a while...even negative voltages. So , I'm replacing it again. This time using posi lock connectors that came with the sensor.

[Lawrence Coppari]

I still think it is baloney. Here's why. If air is getting into the sensor by being drawn through the wire, what draws it? The pressure in the exhaust is above atmospheric else it would not come out the end of the exhaust pipe. So what draws the air in there? Where does it go? To keep being drawn in, it must go somewhere. Can't go to exhaust stream because pressure is high there.

I don't believe it.

[Eduardo Castrejón Elbjorn]

Yes, I´m in the same position only to try to undestand this

we need to ask to mr.
FR Wilk