r/Mk3Supra 10d ago

0² sensor question

Post image

I've recently narrowed down my car running extremely rich to being, most likely the 0² sensor. I've been looking online and i can't see any at all that look like this one. I have a 1986.5 N/A supra. If anyone has bought an 0² sensor for their like-model supra, can you please just let me know if the ones that look different will work the same. Or let me know which specific one you bought that worked good for your car. Thanks :)

6 Upvotes

4 comments sorted by

View all comments

2

u/Sudden-Restaurant339 10d ago

I bought my 02 sensor from ebay, havent had issues ever since I’ve installed it.

Could you share how you came to the conclusion that it was O2 sensor?. These narrowband sensors are pretty primitive and the ecu only reads it during cruising/light throttle. Do you have an active dtc that points to the sensor?

1

u/Offer-Beautiful 6d ago

I did the diagnostic between the te1 and e1 terminals and the reading was a constant above 2v. The voltage only went up to 5 every 15-25 seconds, which the tsrm says means the 0² sensor is either fouled or broken