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motor solenoid

Discussion in 'Fisher Engineering Discussion' started by mikejkd, Jan 22, 2011.

  1. mikejkd

    mikejkd Junior Member
    from MA
    Messages: 4

    How many ohms do you have on your two plug mm1 motor solenoid?
     
  2. mrv8outboard

    mrv8outboard Senior Member
    Messages: 197

    What posts/terminals are you trying to ohm out and why?
     
  3. mikejkd

    mikejkd Junior Member
    from MA
    Messages: 4

    The trigger posts. I keep burning out controllers and I cant find anything else wrong. I am thinking if the motor solenoid is pulling to many amps its burning the controller out. it burns fuses and cooks the controller.

    My other thought is the connector for the controller was loose so I crimped the female ends closed a little more in hopes it makes better contact. If they where loose does anyone know if that would kill the controller?
     
  4. mrv8outboard

    mrv8outboard Senior Member
    Messages: 197

    The activation terminal is a low amp circuit. It is separate from the high amp circuit. The activation side charges a coil of wire to create a magnetic field (electro magnet) that pulls a plunger with a plate attached to bridge the lugs on the high amp terminals. So if this circuit is output only from the controller and IS what is causing the fuse to fail then one would suspect a bad ground at the solenoid causing a low voltage high amp condition that the circuit was not designed for. Is it the proper solenoid? Is it wired properly? Also loose connections can cause low voltage high amp conditions.
     
  5. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    I think he knows that.Thumbs Up That's probably why he's looking for information......

    OP - an amp draw test will be much more accurate on an inductive load than a resistance test.
     
  6. mikejkd

    mikejkd Junior Member
    from MA
    Messages: 4

    Its been working fine since 97. I cleaned all the grounds and squeezed the female connector in hopes that will solve it and not go through another 300 for a controller. I was wondering if the coil in the solenoid is shorted just enough to pull to many amps but still work. This is why I was curious on the ohms of that coil.
     
  7. mrv8outboard

    mrv8outboard Senior Member
    Messages: 197

    My system is a Fisher. I use an automotive style solenoid. I get 2 ohms on the activation circuit terminal and ground. Yours should be similar in resistance.