The Ford Barn

Bruce of MN · 07-10-2021, 04:03 PM

While driving around town the other day, the car stopped running. A couple of gallons of gas fixed things, so I need to respect what the gas gauge is saying! But, an electrical problem has come up. The gen is hot after running a short time and doesn't show charging on the ammeter. I checked the ammeter and cutout and put on my spare gen. It has the ammeter needle zooming past the end of the scale if I rev it. The battery is 18 months old, plates are covered with water, and it spins the motor well, so it seems OK. The 3rd brush is pushed all the way up.

Any ideas?

Badpuppy · 07-11-2021, 08:40 AM

Check for short to ground inside the junction box and toward the battery.

mhsprecher · 07-11-2021, 11:59 AM

Bruce, sounds like a short to me, like I had a few months ago.

Big hammer · 07-11-2021, 12:49 PM

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If the ammeter is showing + charging, I would clean the battery terminals, grounds, starter terminal, if the generator isn't connected to the battery the generator can and will make 40 volts. If the battery is shorted internally same thing can happen.

07-10-2021, 04:03 PM	#1
Bruce of MN Senior Member Join Date: May 2010 Location: VA Posts: 1,409	Generator While driving around town the other day, the car stopped running. A couple of gallons of gas fixed things, so I need to respect what the gas gauge is saying! But, an electrical problem has come up. The gen is hot after running a short time and doesn't show charging on the ammeter. I checked the ammeter and cutout and put on my spare gen. It has the ammeter needle zooming past the end of the scale if I rev it. The battery is 18 months old, plates are covered with water, and it spins the motor well, so it seems OK. The 3rd brush is pushed all the way up. Any ideas?

07-11-2021, 08:40 AM	#2
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,144	Re: Generator Check for short to ground inside the junction box and toward the battery.

07-11-2021, 11:59 AM	#3
mhsprecher Senior Member Join Date: Aug 2012 Location: Takoma Park, MD Posts: 2,817	Re: Generator Bruce, sounds like a short to me, like I had a few months ago. __________________ 1924 Model T Coupe 1928 Model A Roadster 1930 Model A Town Sedan 1939 Deluxe Fordor 1945 pickup 1951 Custom convertible

07-11-2021, 12:49 PM	#4
Big hammer Senior Member Join Date: Jun 2014 Location: Land of Lincoln Posts: 3,126	Re: Generator Sponsored Links (Register now to hide all advertisements) If the ammeter is showing + charging, I would clean the battery terminals, grounds, starter terminal, if the generator isn't connected to the battery the generator can and will make 40 volts. If the battery is shorted internally same thing can happen. __________________ Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done

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