The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

2G O2 Sensor Wiring

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Tkzdsm

Proven Member
92
4
Sep 22, 2024
Henderson, Nevada
Hey guys I need help fixing and rewiring the o2 sensor that is closest to my engine, and possibly the 2nd one by the cat. but for now I need help with the front one. Unfortunately I was left with a mess because whoever did this did not finish his job in wiring this… I have no idea what I’m looking at or how to rewire an o2 sensor so any help is good thank you!

EDIT: i realized how dumb this post is, it’s just the same color wires to eachother, sorry for the dumb post guys… i do have a question though, can a bad o2 sensor cause smoke?

:the wires come off of the o2 sensor that is right before the downpipe i believe

You must be logged in to view this image or video.
 

Attachments

You must be registered for see attachments list
Last edited:
Careful here, miswiring the O2 sensor is the leading cause of blowing the ECU ground trace and that can cause all sorts of smoke, both from the engine and from the ECU.

You must be logged in to view this image or video.
 

Attachments

You must be registered for see attachments list
Where was said smoke coming from? A bad 02 would cause the engine to run rich - possibly enough to create soot-smoke
Exhaust smoke, I got a code for both o2 sensors, although it is not black soot smoke, there is soot all in the exhaust and aswell as black soot buildup on two of the four spark plugs, black tip and all. but is it possible for “running rich smoke” to be greyish white, i know im not burning coolant.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top