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Thread: Starter Solenoid

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    Senior Member ckeithjordan's Avatar
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    Starter Solenoid

    How can one bench test a starter solenoid to see if it works, without wiring it into the car?
    Keith

    1957 TR3 TS20447LO (2017-)
    1962 TR3B TCF1183L (1979-1982)
    1966 Spitfire MKII (1972-1975)

  2. #2
    Obi Wan
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    Re: Starter Solenoid

    You could wire up a Head light using the solenoid as the switch then ground the solenoid case and apply power to the contact that the starter switch connects to. The headlight is a slightly higher load than just using a meter to test the starter contacts.
    Of course you could use a starter motor but would need to secure the motor.

    David
    TR3A TS75524L

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    Yoda dklawson's Avatar
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    Re: Starter Solenoid

    Or test with no load using a multimeter. Set the multimeter for continuity or resistance (Ohms). Check for continuity between the two big threaded terminals. You should find infinite resistance (open) with no power supplied. Now connect a battery charger to your solenoid, black/ground cable to the solenoid mounting foot, red/hot lead to the solenoid's spade terminal. You should hear a click when the battery charger is connected and the solenoid is likely to jump a bit. With the solenoid powered by the battery charger, use the multimeter again. You should find continuity (very low resistance) between the two threaded solenoid terminals.

    Testing with a load like the headlight suggested above is better but the multimeter is an adequate test just to confirm the contacts are moving and closing.
    Doug L.
    '64 Morris Mini Cooper-S 1275
    '67 Triumph GT6 Mk1

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    Senior Member ckeithjordan's Avatar
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    Re: Starter Solenoid

    Thanks guys!
    Keith

    1957 TR3 TS20447LO (2017-)
    1962 TR3B TCF1183L (1979-1982)
    1966 Spitfire MKII (1972-1975)

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