Need help figuring out what this is exactly called. Voltage regulator/ignition relay

Discussion in 'Anything Scout' started by daytjohn, Aug 18, 2018.


  1. daytjohn

    daytjohn Farmall Cub

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    78 Internation Scout ii Terra 345 v8 4sp... Truck wont start, very little power. Tried Cross post on solenoid. Very light spark, not enough juice to start. Brand new full charge battery. Ignition was left on, I'm pretty sure this is the cause. Every part store I went to had no idea what this part is. Part is Prestolite swf 4280. Tried searching through google and couldn't find anything like it. Any help would be appreciated
     

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  2. Mark Aycock

    Mark Aycock High Wheeler

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    I don't think that's the problem. Will it turn over but not start? If so, leaving it on may have fried your coil. If it won't turn over check all of your battery connections first.
     
  3. daytjohn

    daytjohn Farmall Cub

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    It won't turn over at all. Getting very low power to starter tried to jump starter with screwdriver very low spark not enough to budge starter. Took starter got checked it's fine new coil brand new battery.
     
  4. daytjohn

    daytjohn Farmall Cub

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    I thought this was some sort of voltage regulator. To me that's how it acts bad voltage regulator. Parts stores can't find anything like this on their computers? Brand New battery, coil, wires, plugs, starter check good very low power between ignition switch to starter. Ignition switch was left on overnight. Ran like a champ yesterday.
     
  5. daytjohn

    daytjohn Farmall Cub

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  6. Mark Aycock

    Mark Aycock High Wheeler

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    Use a voltmeter and check your voltage where the large wire from the (+) pole of your battery goes to the solenoid on the starter. You may have a bad connection at the battery. I would also check the connection where the (-) from the battery goes to ground.
     
  7. Mark Aycock

    Mark Aycock High Wheeler

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    I don't have my manual here but I think the thing on the firewall has something to do with speed control when decelerating.
     
  8. daytjohn

    daytjohn Farmall Cub

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    I ordered a new d.u.i distributor that has everything built in all it needs is a hot wire but it's a special build takes 4 to 5 weeks to get it. Can't go without my scout that long it's my daily driver. Maybe Monday scout parts dealer can help me out I don't know
     
  9. daytjohn

    daytjohn Farmall Cub

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    The parts store said it was ignition module ( gold box) but what I have has totally different connections. What I have is same brand as distributor that they don't make anymore #?!"lite can't remember name
     
  10. Mark Aycock

    Mark Aycock High Wheeler

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    Where are you?
     
  11. daytjohn

    daytjohn Farmall Cub

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    West Milton Ohio
     
  12. Dana Strong

    Dana Strong Dreams of Cub Cadets

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    The starter (cranking) circuit is separate from the charging and ignition circuits. Don't work on more systems at one time or you will both go crazy and you might cause more, different problems.
    To diagnose the starter problem, (and since we will assume the starter test was properly done) you need to check each connection in the circuit:
    Positive battery terminal to positive cable (including between the connector and the cable itself). Positive cable to Battery terminal of solenoid. Ground connection between starter body and its attachment, then to frame. [There is no wire here.] Finally cable between frame and battery Neg. terminal; both ends and connectors-to-cable too.
    Jumping from the B terminal to S terminal won't do anything if the starter isn't properly grounded; the solenoid internal piston won't move. That agrees with what you said happened in Post 1, so a bad ground seems likely the problem.
     
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  13. Mark Aycock

    Mark Aycock High Wheeler

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    Good grief! You're 15 minutes from the Scout Nationals next weekend. There will be so much IH info there it will be overwhelming. And.... you're only 36 miles from Super Scout Specialists.
     
  14. daytjohn

    daytjohn Farmall Cub

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    Thank you will do
     
  15. blue smoke

    blue smoke High Wheeler

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    If it turns over ok then I think you fried your gold box. If you left the key on in the run position this is the culprit. I have no idea why it would happen but it did and we have a fleet of Internationals (65+) in my location and if a mechanic left the ignition switch on for an extended period it would fry the gold bow put a new one and it fired right up

    You probably should have posted in the tech section
     
  16. jeff campbell

    jeff campbell Lives in an IH Dealership

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    Yup just like the old points , with constant voltage going to it its gonna try something.
     
  17. Mark Aycock

    Mark Aycock High Wheeler

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    Did you check your wires?
     
  18. daytjohn

    daytjohn Farmall Cub

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    Replaced hot and ground cables cleaned all contacts dropped starter cleaned and sanded all contacts including block. Put it all back together got nothing. Turned out my brand new $280 optima battery was bad big bucks lasted 2 months junk. Took back to you store they said battery was 7 year's old told them I just bought from them no receipt no refund even though they called my name and number up on there computer and it showed that I just bought from them. Advanced Auto CROOKS!!
     
  19. Mark Aycock

    Mark Aycock High Wheeler

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    Man, hate to hear that. Glad you figured it out though.
     
  20. daytjohn

    daytjohn Farmall Cub

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    My niece told me to call advanced Auto corporate office and I'll be they gave me a full refund $280 for the new battery this was a good day
     
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