986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

JFP in PA · 07-31-2026, 05:59 AM

Bosch uses microscopic air gaps in some of their O2 sensor wires to pull in the reference air you referred to, so if you cut the sensor wires very short to the sensor itself, soldering might cause an issue. But as the wires that come on the sensors without proper harness connectors are many inches long on purpose, soldering them away from the sensor will not cause an issue as there is still plenty of "breathing" wire still left. Over the years, we have soldered more than a few Bosch sensors that came without a proper harness connector, and we have never had a problem.

I am also aware that some aftermarket sensors use a type of wire that has a high nickel content, and which the manufactures recommend against soldering because it is very difficult to get a good solder connection high nickel wire using commonly used solder unless you use a special type of solder and flux to make the connection.

07-31-2026, 05:59 AM	#13
JFP in PA Registered User Join Date: Feb 2005 Location: It's a kind of magic..... Posts: 6,700	Bosch uses microscopic air gaps in some of their O2 sensor wires to pull in the reference air you referred to, so if you cut the sensor wires very short to the sensor itself, soldering might cause an issue. But as the wires that come on the sensors without proper harness connectors are many inches long on purpose, soldering them away from the sensor will not cause an issue as there is still plenty of "breathing" wire still left. Over the years, we have soldered more than a few Bosch sensors that came without a proper harness connector, and we have never had a problem. I am also aware that some aftermarket sensors use a type of wire that has a high nickel content, and which the manufactures recommend against soldering because it is very difficult to get a good solder connection high nickel wire using commonly used solder unless you use a special type of solder and flux to make the connection. __________________ “Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein Last edited by JFP in PA; 07-31-2026 at 06:16 AM.