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o2 sensor

  1. 03 S10 o2 sensors?

    262ci Forum (4.3)
    My '03 S10 4.3 SES light came on, and my mechanic said it was bank 1 sensor 2 o2 sensor. Which o2 sensor is it that needs to be replaced? I would like to do it myself to save some cash, but determining which sensor is bank 1 sensor 2 on my model seems to be a source of debate... A diagram for my...
  2. O2 sensor issues

    S10 / Sonoma
    Can anyone help? I have a 1998 Chevy S10 with the 4.3 Vortec and have been having problems with an O2 sensor. I was getting a code 0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3) so I replace the O2 sensor. Now I am getting a code 0146 O2 Sensor Circuit No Activity Detected (Bank 1...
  3. Do I need o2 sensors

    S10 / S15
    I have a 97 S10 4.3. I don’t have a catalytic converter. The o2 sensor is kind of in my way is there any good reason not to cut out this section of exhaust and weld pipe in? The exhaust flange is bad and the bolts are broke this would be my easiest fix.