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O2 Sensor

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Apr 23, 2001.

  1. MudFrog

    MudFrog 1/2 ton status

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    How many wires does the O2 sensor have? I'm thinking it's only got 1 but I'm not positive.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  2. timebomb1602

    timebomb1602 1/2 ton status

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    I have a 91 and I only have one wire.....if you are changing the sensor plug it in first then install. Its much easier:)

    <font color=red>1991 GMC Jimmy 350tbi 3.42</font color=red>[​IMG]
     
  3. muddin4fun

    muddin4fun 3/4 ton status

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    That might be easier, but won't it twist up the wire? I used an o2 socket (basically, a socket with a notch cut out for the wire) then plugged it in.

    [​IMG]
    <A target="_blank" HREF=http://k5chevyblazer.homestead.com/home.html>http://k5chevyblazer.homestead.com/home.html</A>
     
  4. timebomb1602

    timebomb1602 1/2 ton status

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    i just twisted it in reverse then when i tightened it it was straight.

    <font color=red>1991 GMC Jimmy 350tbi 3.42</font color=red>[​IMG]
     
  5. BurbinOR

    BurbinOR 3/4 ton status

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    One wire. My TPI unit/ECM is off a '90 IROC.

    My O2 sensor has a plug together setup about 6" above the exhaust bung, so don't have to worry about twisted wires. You guys/gals don't have this style?

    <font color=orange>'79 - 406 TPI -<font color=orange> K5#5 - <font color=blue>See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.coloradok5.com>http://www.blazzinor.coloradok5.com</A>
     
  6. CV202

    CV202 1/2 ton status

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    Just one wire, and the plug's really fun. Just did mine last week. Use a wrench and you won't have to worry about messing up the wire. But plug it in after the install, or the wire will twist and can break.

    Why do people keep calling it a Bronco!!!!! [​IMG]
     

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