85 ROW O2 Questions

[Steve W]

The DME shows the circuitry for a O2 sensor. But the fuel quality switch looks unfamiliar like someone changed or repaired it. What is printed on top of the silver sticker on the chip?

[vancouver86/911]

It says TC 6000 on the silver sticker (if I'm reading in the right spot).

[Steve W]

then it's a counterfeit copy of a old Weltmeister chip. Likely you have a working O2 sensor if everything is done right.

[vancouver86/911]

Thank you very much for the input Steve. Now I know to replace the O2 sensor as part of the maintenance of the vehicle. That was very helpful as that was the exact information I was looking for. If I need to repair this DME I'll know where to send it.