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Detroit 671 TIB Starter Relay / Solenoid

Discussion in 'Engines' started by dewald, Mar 11, 2021.

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  1. dewald, Mar 11, 2021
    #1
    dewald

    dewald Member

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    I believe my starboard starter relay/solenoid has gone bad. I still have to test it. Here is my question/problem. If it is bad what do I replace it with. There are no marking on it at all, no part #, manufactures name, just the Napa sticker. Port relay has nothing on it at all. Called Florida Detroit Diesel, they told me that the relay/solenoid is not a Detroit part they have no reference #'s. I need to call the boat manufacture. Since it's a 1992 Ocean that not going to happen. Anyone have any ideas?
    20210310_100049.jpg
  2. Pascal, Mar 11, 2021
    #2
    Pascal

    Pascal Senior Member

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    So when they work on a customers boat but the engine doesn’t crank they tell them sorry not our job? Nice service. Try another DD shop. Pretty sure an online search will get you hits. Has to be pretty common and also used on trucks etc
  3. NYCAP123, Mar 11, 2021
    #3
    NYCAP123

    NYCAP123 Senior Member

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    Take it to NAPA. I'm sure they'll have no problem matching it.
  4. dewald, Mar 11, 2021
    #4
    dewald

    dewald Member

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    Thanks for the the feed back. Spent about 3 hours + online line thinking I could find something with no luck or anything specific for DD 671. Found a lot of 4 terminal relay/solenoid that all look alike about they have different Amp rating and for either continues or intermittent use. Yes I will be at Napa if all else fails.
  5. Capt Ralph, Mar 11, 2021
    #5
    Capt Ralph

    Capt Ralph Senior Member

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    Lets start from the beginning;
    What voltage starter?
    What model starter (40MT)?
    What voltage is your dash?
    Need to ask these things because 12 & 24Vdc can both be used here.
    All fuses and breakers checked?
    Any ships schematics or diagrams.
    Sudden failure?
    Your picture is of the primary (low current) solenoid that may be 12Vdc actuated that passes 24Vdc to the starter solenoid.
    Have you tried jumping either solenoid?

    Help me out here on my questions and I'm sure we can help.
  6. dewald, Mar 11, 2021
    #6
    dewald

    dewald Member

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    Thanks Capt. Ralph I knew someone on this site would kick me in the butt to push me in right direction. I will start working on answering your questions and get back to you/everyone. I'm sure curious mine's want to know. :)
  7. dewald, Apr 7, 2021
    #7
    dewald

    dewald Member

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    Sorry for not responding sooner, had family matters to take care of. Straight to the bottom line, 12V system. Solenoid was bad and the positive wire from the solenoid to the starter was bad (none tinted wire, both wire terminals broke off with a light twist). New Napa Echlin ST85 solenoid, tinted wire, closed end terminals, heat shrink, etc. Engine started on first crank. All is good!
  8. Capt Ralph, Apr 7, 2021
    #8
    Capt Ralph

    Capt Ralph Senior Member

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    Sorry about the family matters.
    Glad to hear your good news on your engine issues.
    Update your records and you will be the expert next time.