Buzzing Starter Solenoid
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Buzzing Starter Solenoid

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    Default Buzzing Starter Solenoid

    I'm stumped here boys, got the motor in my Sanger wired everything per the diagrams available here. Now when I turn the key to the on position I get an immediate buzzing from the solenoid. I haven't turned the ignition to the start position as I'd like to find the cause of this buzzing prior. Any help would be appreciated. Thanks!

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    Quote Originally Posted by Mr.goslo View Post
    I'm stumped here boys, got the motor in my Sanger wired everything per the diagrams available here. Now when I turn the key to the on position I get an immediate buzzing from the solenoid. I haven't turned the ignition to the start position as I'd like to find the cause of this buzzing prior. Any help would be appreciated. Thanks!
    are you running a relay or just the solenoid on the starter. If you are running a hard start relay that could be the problem. Also ford or chev. also does it try to kick the starter drive out prior to hitting the key to the start position? M

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    Quote Originally Posted by ol guy View Post
    Quote Originally Posted by Mr.goslo View Post
    I'm stumped here boys, got the motor in my Sanger wired everything per the diagrams available here. Now when I turn the key to the on position I get an immediate buzzing from the solenoid. I haven't turned the ignition to the start position as I'd like to find the cause of this buzzing prior. Any help would be appreciated. Thanks!
    are you running a relay or just the solenoid on the starter. If you are running a hard start relay that could be the problem. Also ford or chev. also does it try to kick the starter drive out prior to hitting the key to the start position? M
    BBC, no relay. Not kicking the gear out, just buzzing away.

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    Quote Originally Posted by Mr.goslo View Post
    BBC, no relay. Not kicking the gear out, just buzzing away.
    okay with that being said I would double check the wiring at the back of the ignition switch. Sounds like the starter wire may be in the wrong spot. the buzzing could be the starter wire hooked to the ignition poll and trying to start without the proper voltage to get it done???? M

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    Quote Originally Posted by Mr.goslo View Post
    I'm stumped here boys, got the motor in my Sanger wired everything per the diagrams available here. Now when I turn the key to the on position I get an immediate buzzing from the solenoid. I haven't turned the ignition to the start position as I'd like to find the cause of this buzzing prior. Any help would be appreciated. Thanks!
    Not sure what you mean when you say "buzzing". (Could it be clicking?) That being said, take a jumper wire and try jumping from the battery terminal of the solenoid to the "S" terminal to see if you get a normal response. If it is now "normal", check your wiring. If it does the same thing, maybe you don't have enough battery voltage to pull the solenoid plunger in.
    Dave

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    Double check the connetion points at the switch and starter. But also make sure the block is grounded properly. It could be other accessories trying to ground back thru the starter circuit if the block ground is bad or missing.
    So many projects, so little time

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    Quote Originally Posted by Maxey View Post
    Not sure what you mean when you say "buzzing". (Could it be clicking?) That being said, take a jumper wire and try jumping from the battery terminal of the solenoid to the "S" terminal to see if you get a normal response. If it is now "normal", check your wiring. If it does the same thing, maybe you don't have enough battery voltage to pull the solenoid plunger in.
    Dave
    It sounds almost like a tired electric fuel pump, definitely a buzz not a click. I'm going to run through all my wiring again tonight.

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    Default 3 terminals

    There are three terminals on a GM solenoid. The big one gets the battery cable and any other wires needing 12 V
    "un switched".. The small one on the outside is only used if you're using a ballast resistor in your ignition circuit, and if that is the case, that terminal is hooked to the coil side of the ballast resistor to furnish full battery voltage to the coil while cranking ONLY... The small terminal inboard towards the block comes from the the "Start" position of the key, or the starter button directly. That's it. It sounds to me like you have the 12v source for starting hooked to the outside terminal. Just a guess....

    Ray
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    Quote Originally Posted by Moneypit View Post
    There are three terminals on a GM solenoid. The big one gets the battery cable and any other wires needing 12 V
    "un switched".. The small one on the outside is only used if you're using a ballast resistor in your ignition circuit, and if that is the case, that terminal is hooked to the coil side of the ballast resistor to furnish full battery voltage to the coil while cranking ONLY... The small terminal inboard towards the block comes from the the "Start" position of the key, or the starter button directly. That's it. It sounds to me like you have the 12v source for starting hooked to the outside terminal. Just a guess....

    Ray
    If he had the outside terminal ("R" for Bypass terminal) connected to start on the ignition switch, there would be no sound because that terminal doesn't connect to anything
    until the solenoid plunger moves. At that point, the "R" terminal is connected to the disc inside the solenoid.

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    Default Really??

    Quote Originally Posted by Maxey View Post
    If he had the outside terminal ("R" for Bypass terminal) connected to start on the ignition switch, there would be no sound because that terminal doesn't connect to anything
    until the solenoid plunger moves. At that point, the "R" terminal is connected to the disc inside the solenoid.
    Look inside again... The "disc" you refer to is also spring loaded and the electrical connection inside could excite the disk from the "R" terminal... Not enough of a connection to engage the solenoid, but enough to flutter the disk against the spring... Lets not forget how those connections wear on one side, and the little crooked "arm" that hangs out from the "R" terminal.... I do agree there is something fishy with the wiring on one end, or the other...And/or something not right inside the end cap of the solenoid.... It wouldn't be the first time one of the small terminals turned in the plastic housing....

    Ray
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    Thanks for all your help so far, all the wiring on the switch side is correct. Wiring to the terminal block is correct, next step is going to be the wiring on the starter side and cross my fingers I don't need to replace the starter.

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    Quote Originally Posted by Moneypit View Post
    There are three terminals on a GM solenoid. The big one gets the battery cable and any other wires needing 12 V
    "un switched".. The small one on the outside is only used if you're using a ballast resistor in your ignition circuit, and if that is the case, that terminal is hooked to the coil side of the ballast resistor to furnish full battery voltage to the coil while cranking ONLY... The small terminal inboard towards the block comes from the the "Start" position of the key, or the starter button directly. That's it. It sounds to me like you have the 12v source for starting hooked to the outside terminal. Just a guess....

    Ray
    Ok so I just want to clarify what I've got, the large terminal has: Battery cable, Green main power, and alternator "excite" possibly...? The outer post has yellow wore going to pink terminal for HEI distributor. Inner post has purple wire which is wired to the "IGN" post on ignition switch that part is my problem I believe. That should run to the "SOL" post on the ignition switch, correct?
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    Last edited by Mr.goslo; 06-14-2016 at 08:29 PM.

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    Quote Originally Posted by Mr.goslo View Post
    Ok so I just want to clarify what I've got, the large terminal has: Battery cable, Green main power, and alternator "excite" possibly...? The outer post has yellow wore going to pink terminal for HEI distributor. Inner post has purple wire which is wired to the "IGN" post on ignition switch that part is my problem I believe. That should run to the "SOL" post on the ignition switch, correct?
    2 things...

    1) The "IGN" on the switch should go directly to the HEI. The only other wire to the HEI is the TACH. Nothing from the starter to HEI.

    2) Yes, the "SOL" on the switch should go to the inner post "S" on the starter.



    You wont need anything on the outer post

    However, I'm a little unclear about why, in it's current configuration as you describe, the starter doesn't engage when the key is in the "ON/RUN" position... It should have.
    Last edited by Budweiser; 06-15-2016 at 12:32 AM.

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    Quote Originally Posted by Mr.goslo View Post
    It sounds almost like a tired electric fuel pump, definitely a buzz not a click. I'm going to run through all my wiring again tonight.
    Not actually "hearing the sound", could it be possible that the starter is engaging, but the over-running clutch (drive) is slipping? I would describe the sound as a "whirring sound".
    GM starter "drive problems" are not that uncommon. The above comment is just a "WAG".

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