The Ford Barn

bosticjb · 09-20-2021, 08:51 PM

My car quit charging so I FIRURED IT WAS A DEAD ALT, WENT TO NAPA AND GOT ANOTHER AND WHEN I PUT IT ON AS SOON AS I FLIPPED THE MASTER SWITCH I BLEW THE FUSE ON THE STARTER I TOOK THE LEADS OFF THE ALT BUT STILL BLEW ABOUT 3 MORE FUSES WHEN I PUT LEADS BACK ON ALT AND STARTED THE CAR STILL NO CHARGING, ANY SUGGESTIONS ,, OH I HAD THE OLD ATL TESTED IT'S CHARGING GOOD

johnbuckley · 09-21-2021, 03:30 AM

long shot here.... Is the polarity correct?

Patrick L. · 09-21-2021, 06:05 AM

I'm confused, which is normal.
After you took the leads off the alt were you still blowing fuses ? Or only when the leads are attached ?

Just disconnect the alt but have the other power leads hooked up and see if everything works and the fuses don't blow.

Badpuppy · 09-21-2021, 08:28 AM

So you start the car with blown fuse and run on alternator for coil power. I would guess a broken wire in the firewall junction box touching ground.

rotorwrench · 09-21-2021, 09:44 AM

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Did you also take the lighting and horn feed wire off? If the fuse blows, you have a short somewhere. It could be the dash light or any other hot electrical circuit in the system shorting to ground or cross shorting to another wire.

09-20-2021, 08:51 PM	#1
bosticjb Member Join Date: Jul 2020 Posts: 33	Charging problem My car quit charging so I FIRURED IT WAS A DEAD ALT, WENT TO NAPA AND GOT ANOTHER AND WHEN I PUT IT ON AS SOON AS I FLIPPED THE MASTER SWITCH I BLEW THE FUSE ON THE STARTER I TOOK THE LEADS OFF THE ALT BUT STILL BLEW ABOUT 3 MORE FUSES WHEN I PUT LEADS BACK ON ALT AND STARTED THE CAR STILL NO CHARGING, ANY SUGGESTIONS ,, OH I HAD THE OLD ATL TESTED IT'S CHARGING GOOD

09-21-2021, 03:30 AM	#2
johnbuckley Senior Member Join Date: Jul 2010 Location: United Kingdom Posts: 1,444	Re: Charging problem long shot here.... Is the polarity correct?

09-21-2021, 06:05 AM	#3
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Charging problem I'm confused, which is normal. After you took the leads off the alt were you still blowing fuses ? Or only when the leads are attached ? Just disconnect the alt but have the other power leads hooked up and see if everything works and the fuses don't blow.

09-21-2021, 08:28 AM	#4
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,145	Re: Charging problem So you start the car with blown fuse and run on alternator for coil power. I would guess a broken wire in the firewall junction box touching ground.

09-21-2021, 09:44 AM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,440	Re: Charging problem Sponsored Links (Register now to hide all advertisements) Did you also take the lighting and horn feed wire off? If the fuse blows, you have a short somewhere. It could be the dash light or any other hot electrical circuit in the system shorting to ground or cross shorting to another wire.