so i noticed the other day when i was about to replace my front o2 sensor on a d16y8, that one of the wires on the engine harness, right by the connector for the oxygen sensor was broken. obviously replacing the sensor will do nothing if the harness is broken.
im wondering if i bypass the connector for the sensor by adding a jumper wire from the harness side to the sensor side.
here's a little sketch i did in paint to make it easier to explain. lets say the black wire is broke and doesn't attach to the connector.



has anyone ever tried this or heard of it working? it makes sense that it would work but i don't wanna start splicing wires or bother to attempt the work if it's been tried and failed. thanks for any help or feedback!

 

Its pretty common...

just make sure to do a good job. Dont just twist the wires together. Solder & shrink wrap them and wrap it in electrical tape when you are all done.

 

If you do a good clean splice it should be ok, but if you do it it half-assedly you may get a CEL from there being a resistance error.

 

You should de-pin the remains of the black wire, get a new pin, and re-pin that wire into the connector.

If you do it the way you are thinking, you're going to have to cut that same wire on every new O2 sensor you ever buy for that car. You're also going to have to cut that jumper wire every time as well, and over time it will get shorter and shorter.

Not to mention if you ever have to take your engine out, you're going to have to cut the jumper wire or you're going to have to take out the O2 sensor from the manifold (can be a huge pain if the threads get rusted and stuck).

It will take more time to do it right the first time, but it will take even more time to have to re-do the same cob job over and over again.

 

it's easier to get a new wire from the junk yard, if it is the connect replace with new connector, and try to avoid cutting the O2 wires cause you'll end up doing it again if replace o2

 

k thanks guy!