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What sensor is this?

Discussion in 'General Tech and Maintenance' started by Ethan, Jun 13, 2011.

  1. Ethan

    Ethan Well-Known Member

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    Back of a B18a1 block.

    [​IMG]
     
    Last edited: Jun 14, 2011
  2. eg'sforlife

    eg'sforlife New Member

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    knock sensor i believe
     
  3. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    b18a doesnt have a knock sensor. looks like a spot for the second bolt holding the alternator bracket on...
     
  4. jlicrx

    jlicrx Senior Member

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    do you mean the green sensor? - it is oil temp sensor - not really needed
     
  5. RHDism

    RHDism Right Hand Drive guru

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    x2 ;)....although that block appears to have a knock sensor.
     
  6. Ethan

    Ethan Well-Known Member

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    [​IMG]

    uploaded the wrong pic lol

    but yea the green one. i keep having people tell me is a KS and other people telling me its everything else! :(
     

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  7. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    the green plug is a Engine Coolant Temp Switch (for rad fan)
    the big black plug is a Engine Oil Temp Switch (also for rad fan, but not needed)
    the small 1-wire plug is the Engine Oil Pressure Switch (for gauge oil light)

    [​IMG]
     
  8. D16SiHatch

    D16SiHatch New Member

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    you've got it backwards. the 2 prong black plug is coolant temp for the radiator fan, it is needed. the green plug reads oil temp to activate the radiator fan, but is not needed.
     
  9. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    Thanks, I was going by the position in the helms diagram, but looking at the pic closely it does list the ECT sensor as the larger one.
     
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