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o2 Sensor CEL

Discussion in 'HYBRID -> ED-EF / DA' started by nodor, May 26, 2005.

  1. nodor

    nodor Junior Member

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    So I have a b16 swap into my 1990 Civic hatch. DC-Sports 4-2-1 Header with one o2 sensor. I have the 2nd one wired from the ECU to the 1 and only o2 sensor. After a hard pull I will get a CEL light for the O2 or when I am at high rev's and let off the gas and coast it will give me a CEL for the o2. Should I have a 2nd bung installed somewhere on the header and install a 2nd O2 or is something else wrong?

    TIA
     
  2. B16CRX

    B16CRX Senior Member

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    add another bung and wire both O2 sensors up correctly.
     
  3. brian11to1

    brian11to1 Senior Member

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    my solution is simple. do it right the first time. you should have had the second bung welded...
     
  4. nodor

    nodor Junior Member

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    Ok this is all great. but do I just add the bung behind the cureent O2 or is there somewhere special I need to put it?
     
  5. B16CRX

    B16CRX Senior Member

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    you have a 4-2-1 header. put one bung on the collector os 1-3 and teh other bung on teh collector of 2-4. Block off the current bung if it isnt in one of these locations.
     
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