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#21
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#22
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Formula 400 alternator
Having owned a ‘71 Formula 400 from new until I sold it with well over 100k miles on it, I’d like to offer a thought. Mine had a similar issue one time and eventually I found it after the shift cable froze up in D. In my case the chassis ground wire in the engine compartment fell off. It’s a braided strap at the back of the engine that has a push on connector screwed to the firewall.
When that ground falls off, then the panel grounds back to the engine through the trans shift cable. In my case the current in the cable on a long drive got the cable hot enough to melt the plastic housing to the cable thus freezing it in place. Maybe you shod check the chassis ground along with any other grounds in the system….. |
#23
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Seems like another test with pulling the battery cable off is if the battery blows up from gassing while it is charging and cable is pulled off creating a spark. You then know your alternator is working. It also allows you to purchase a new battery after being released from the E.R.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
#24
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As others have said the alternator is not the likely cause of your problem. And definitely do not disconnect the battery terminals while the vehicle is running! Google voltage drop testing starting systems. This test is easier than it sounds and will help you find compromised wiring and connections in your 50+ YO vehicle. T Be sure and perform the tests while the symptoms are actually occurring.
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#25
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Ok I apologize for mentioning removing cable I done it since a boy on old cars another easy way is just testing voltage with ohms meter at battery if volt continue to drop remove take to local auto store to rest if it reads more than 12 volts and is stable its agood alternator. I. Not trying to have anyone hurt. Harbor frieght oh.s Meyer under $10.
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#26
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Later in life, we had a wintertime no start car that I hauled in with my wrecker. The battery was of course dead, it was on the charger but didn't seem to be charging. I twisted one of the battery clamps to make sure it had a good connection, while it was charging and boom, I exploded my second battery. A friend of mine that owned a body shop blew one up , and got a fragment in his eye. Fortunately the fragment was retrieved, and he did not lose the sight in his eye. Hydrogen gas makes a very good explosive....... |
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