[Wayne 962]

This has been discussed many times before here at Pelican HQ. I've written five books on Porsches and BMWs, and the fact of the matter is that I still don't know for sure. The goofy posi-lock system that BOSCH has for these connectors seems a bit odd to me. In general, the O2 sensors are supposed to be water-proof, meaning that they have to work submerged in water. So, the air-reference signal that the sensor needs to measure O2 has to be gathered through the connector itself. I'm not sure if soldering by itself is the issue with not having a proper connection, or whether it has to do with the fact that people seal the connection with tape and/or heat-shrink tubing. I would agree that soldering by itself would probably not cause a problem. The act of covering up the soldered connection is what causes issues, I believe. This is just my opinion - I'm not 100% sure. In all of the books that I've written, I recommend that our customers stay away from these generic sensors and instead use the proper OEM BOSCH ones with the proper car-model-specific connector installed and attached at the BOSCH factory.

- Wayne