wiring in universal O2

[The Scooby]

well i picked up a bosch universal O2 to replace my factory one that had 169K on it, well here lies the problem, the bosch has 3 wires, 2 white 1 black, the factory one has 1 red, 1 white, and 1 black, i hooked the grounds together as i should but how do i tell if i hooked the others to the right one's

thanks,
shean

[vrg3]

Here's the info you need:

Code: Select all

OEM sensor-side | OEM car-side |Bosch 3-wire | Description
  wire color    |  wire color  | wire color  | 
----------------|--------------|-------------|------------
RED             | YELLOW/RED   | WHITE       | Heater +
BLACK           | BLACK/WHITE  | WHITE       | Heater -
WHITE           | WHITE        | BLACK       | Signal

[evolutionmovement]

Excellent! I just started getting the o2 code this past week. It comes on once in a ahile on the highway for about a minute and then goes off. I guess it's time for the original to go.

Steve

[vrg3]

The original 250,000-mile-old one? Wow...

You can save some money by getting a 1-wire sensor if you don't mind staying in open loop a little longer.

[NICO]

vrg when i un plug my o2 it runs better then if it was pluged in, what is its problem.

also i to wired up a aftermarket 02 sensore its called a ntk or some thing of those lines. should i get a bosch.

[vrg3]

Sounds like your sensor is bad, Nico. Have you tried measuring its output signal?

NGK makes very good oxygen sensors (and brands them NTK), as does Bosch. Your problem isn't that it's an NTK sensor, but it may be that it's gone bad.

You can damage an oxygen sensor by running leaded fuel, by exposing the fuel, oil, intake, or front exhaust to non-sensor-safe silicone, by using certain fuel or motor treatments, or by getting excessive dirt, moisture, or paint on the outside of the sensor.