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temp gauge not working

Discussion in 'Chevy Trucks' started by Detroitdan, Feb 6, 2011.

  1. Detroitdan

    Detroitdan PlowSite.com Addict
    Messages: 1,937

    Replaced the temp sender on the top of the motor, no difference. All the other gauges work fine, this one just stays dead. Where do I check next, is there a switch or a fuse or something? 94 K2500 diesel
  2. Milwaukee

    Milwaukee 2000 Club Member
    Messages: 2,180

    Did you try ground that temp sensor's wire to block to see if gauge work?

    Have this issues on Explorer so I went with aftermarket temp gauge.
  3. mrv8outboard

    mrv8outboard Senior Member
    Messages: 205

    Make sure you inspect the wiring at the plug. They degrade and fail. NAPA has a replacement pigtail for this issue. My NAPA store stocks them. Makes you Hummmm?

    Also make sure you only have one sensor. Some have two. one for the ECU and one for the gauge.
  4. Detroitdan

    Detroitdan PlowSite.com Addict
    Messages: 1,937

    the wiring side of the plug looked ok, but the sender side was a little dirty. I did see another plug on the intake that looked identical, but it looked like it had been changed before, and if iirc it wasnt in any coolant area, it was intake so it wouldnt be coolant temp anyway. The one I changed goes into the left side of the tube from the thermostat housing. Guess I need to try following the wires and looking for an issue. Or get an aftermarket gauge for now. I'm putting a plow on it soon, and the temp gauge is priority number one.