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Thread: Replaced coil, now car stalls..?

  1. #1
    Forum Member 1st year Apprentice
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    Default Replaced coil, now car stalls..?

    Hey guys! Yesterday arvo I came back from a drive in my ta22. About an hour passed before I tried to start it again and there was no spark. It's got a Pertronix ignitor so I thought I'd replace the original coil with a 12v GT40. Swapped them out and now it turns over, runs pretty rough and eventually cuts out. You guys got any ideas..?


    Cheers!

  2. #2
    Junior Member Backyard Mechanic
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    Default Re: Replaced coil, now car stalls..?

    i would say possibly your igniter has a fault. Without seeing and hearing it running hard to say exactly.

  3. #3
    Junior Member Backyard Mechanic
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    Default Re: Replaced coil, now car stalls..?

    Try another coil lead. The coil will get hot and break down if it cant get rid of the spark properly.

  4. #4
    corollamanic Backyard Mechanic
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    Default Re: Replaced coil, now car stalls..?

    running a ballast resistor?

  5. #5
    Junior Member Carport Converter RA35GT's Avatar
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    Default Re: Replaced coil, now car stalls..?

    A GT40 doesn't need a resistor whereas the GT40R does, so make sure you have the right one and have the appropriate voltage on the + terminal of the coil.
    1977 RA35 Celica GT - I4 | 2007 GSV40R Aurion - V6
    Don't live life being scared of death, live in the fear of not truly living. RP 2012

  6. #6
    Forum Member 1st year Apprentice
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    Default Re: Replaced coil, now car stalls..?

    Due to the Pertronix ignitor I bought the non-ballast GT40. Could having a battery with low charge cause this..? Cos when the coil died I was cranking it over for a while..?

  7. #7
    Forum Member 1st year Apprentice
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    Default Re: Replaced coil, now car stalls..?

    Just measured voltage at the + side of coil in ON position and it gave me 9v. This is without a ballast.

  8. #8
    Forum Member 1st year Apprentice
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    Default Re: Replaced coil, now car stalls..?

    All fixed. The GT40 must be incompatible with electronic ignitions as I swapped it out for another electric one I had laying around and she fired straight up. Thanks for the suggestions guys much appreciated!

  9. #9
    Junior Member Backyard Mechanic
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    Default Re: Replaced coil, now car stalls..?

    This is pretty common. Usually with electronic ignition you use a low resistance coil like the electronic coils otherwise you get the symptoms that you described. The resistance across the + and the - terminals should be less the 1 ohm.

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