so after driving around new york city the other day, I hit some metal thing sticking up from the ground, and it tore my exhaust off. After 300$, I had someone replace the cat and weld everything back together. Only problem is, the exhaust heat melted my o2 harness for the sensor after the cat. Does anyone have a part number or have any suggestions as to where i can find this connector?
Thanks a million. (cars a 2004 btw)

 

You tore your exhaust off by hitting something, and the only thing damaged was the exhaust??? Seems incredibly lucky on your part.

One suggestion would be to call up Mazda parts and ask them, describe the part to them and they should be able to find the part number and give you a price.

 

yeah im pretty lucky, i called mazda, i tried explaining to them what i needed, and they quoted me for 2400$ for some type of wire harness that im going to assume isnt what i need.. haha. someone mentioned a pigtail connection? im not familiar with that. would it be a bad idea to just not use the plastic connectors and just splice the wires together?

 

The wiring is part of the O2 sensor itself.

As long as you know what you are doing with electrical work and wiring and proper heat shielding / water shielding / etc... then no, removing the connector from the equation with a direct splice is not a bad idea. If something shorts out through environmental conditions degrading your work, it will blow your engine 15amp fuse and leave you stranded.

Middle ground would be just the O2 sensor no longer working.


The rear O2 sensor is also not needed for engine operation, it is an emissions control part only, just reading to see how well the cat is doing it's job, so if you don't need it for emissions control, you can ignore it until you find what you need.

 

Hey im doing an engine rebuild, got the engine out but my rear o2 sensor was melted so I had to cut the wires. How did you get round this problem?


I might put a chock block on and re-wire them (Hope I can find a wiring diagram)


Hope you got it sorted!