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Question about a sender.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Hossbaby50, Feb 9, 2003.

  1. Hossbaby50

    Hossbaby50 3/4 ton status

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    What is the sender that is right infront of the starter? I was replacing my starter today and I saw this sending unit with a wire connected to it. Then I saw that that wire is cut clean threw. Is this a sender for the oil pressure gauge? My oil pressure gauge doesn't work right, and I am wondering if this is the problem. My truck is an 85 GMC with 350.
     
  2. JORGE

    JORGE 1/2 ton status

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    I don,t know where is the oil sender in the gas engine.But how is the sender? Has it a cilinder form and is close to 2 1/2" long and has a single therminal in the extreme?
    Then is The oil pressure sender.
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    The oil pressure sender is beside the distributor.
     
  4. 90K5

    90K5 1/2 ton status

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    knock sensor
     
  5. Hossbaby50

    Hossbaby50 3/4 ton status

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    Ok, that makes sense. Now I know why it is cut clean then. I am no longer running the factory ESC module that works with a knock sensor. That is why it is disconnected. Thanks

    Harley
     
  6. BlaznRebel

    BlaznRebel 1/2 ton status

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    it's a knock sensor and it tells the computer when you throttle up and down to advance or decrease the ammount of timing to give the motor i think... /forums/images/graemlins/deal.gif
     
  7. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Actually, brother, a knock sensor "hears" if your engine is pinging and sends a signal to the ESC. The ESC retards the timing to eliminate the ping.

    My ESC is disconnected, but I'm not sure if I pulled the knock sensor or not. I'm betting I didn't since I don't know where it's located on the block!!! /forums/images/graemlins/tongue.gif
     
  8. 90K5

    90K5 1/2 ton status

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    if you pulled it out, you are not running any coolant...hopefully you didn't /forums/images/graemlins/thumb.gif
     
  9. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Well, I guess that answers my question, eh?? /forums/images/graemlins/tongue.gif /forums/images/graemlins/grin.gif
     
  10. tomseviltwin

    tomseviltwin 1/2 ton status

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    It's an oil pressure sender if its right above the oil filter and its got a cone shape guard around it. This went bad on mine and was actually leaking oil. Replaced it and my guage worked again.
     

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