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Cat 257b not starting.

David Campbell 1461 · 2023-02-04 17:31

After a bid of troubleshooting, I’ve determined that I’m not getting power to the fuel cut off solenoid. The fuse is good but no power. Ideas?

Replies11
  1. #1Nige2023-02-04 22:17

    If you post a Serial Number an electrical schematic could be provided that would assist you in tracing where the power is disappearing.

  2. #2David Campbell 14612023-02-05 09:15

    SLK3224

  3. #3heymccall2023-02-05 10:24

    Same as 248b

  4. #4Nige2023-02-05 10:31

    Take a good look at the bottom of page 12 (Harness & Wire Symbols) and the tables in the bottom RH corner of Page 13. They will help you a lot when it comes to interpreting what wires do and how to figure out references.

  5. #5thepumpguysc2023-02-05 13:18

    Safety switch.?? Blown fuse.?? Have u hot wired the solenoid to see if it’s good. (Engine starts)

  6. #6David Campbell 14612023-02-05 17:34

    Thank you very much for the schematic. I was able to trace the wiring and found a wire that hade gotten broken when we changed a hose last week. just bought the machine 2weeks ago. Still have a lot to learn about it.

  7. #7David Campbell 14612023-02-05 17:35

    Thanks for the pointers. It was a lot of help!

  8. #8David Campbell 14612023-02-05 17:35

    Found the problem. Thanks for the help.

  9. #9Nige2023-02-05 18:35

    And it was.......?? So that anyone else with a similar issue can get the benefit.

  10. #10David Campbell 14612023-02-06 17:21

    It was a wire that had gotten pulled loose when we changed a hose. For some reason it was not in the harness and was spliced.

  11. #11Nige2023-02-06 18:58

    Ah ha. So somebody got creative with the wiring at some point in the past.?