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Coil voltage.

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ronsmallford
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2010/10/24 09:52:45 (permalink)
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Coil voltage.

As most would know, the power feed to the + side of the coil is via a pink ballast wire which reduces the voltage. My multimeter is reading at the coil only 5.7 volts. This seems low even tho the engine runs ok.
Has anyone checked what voltage they have? And if this is too low what could be the problem?
#1


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    GTV6
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    RE: Coil voltage. 2010/10/24 16:42:58 (permalink)
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    I assume you are measuring with the engine running so sounds like your voltage regulator. Check that at fast idle you have over 14V across the battery.
    #2
    ronsmallford
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    RE: Coil voltage. 2010/10/24 18:15:10 (permalink)
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    No thats just with ignition on engine not running, I better check it with the engine running.
    #3

    GTV6
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    RE: Coil voltage. 2010/10/25 14:19:11 (permalink)
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    When testing with just ignition on you should make sure the points are closed and you should get around 12.5 at the battery and 7.6V over the coil.
    #4
    blown66
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    RE: Coil voltage. 2010/10/25 22:07:01 (permalink)
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    Yes as we had an issue with power to the Petronix electronic disy kit & it showed 9 volts which is to the coil & the Petronix unit requires 12, so we just put in a relay to solve the problem.

    Kev.
    #5
    ronsmallford
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    RE: Coil voltage. 2010/10/25 22:43:11 (permalink)
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    Its amazing that a big fat factory manual doesnt say anywhere what the power to the coil is supposed to be, but it seems from what has been said that mine is low. I can only assume that I have a bad connection somewhere.
    #6

    GTV6
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    RE: Coil voltage. 2010/10/25 22:54:28 (permalink)
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    Have you checked that you have the right type of coil. You can buy them for "with resistor" and "without resistor" Since we have the ballast wire we need the with resistor type.
    #7
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