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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Irregular Charging

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Old Feb 19, 2004 | 05:38 PM
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Irregular Charging

My 82 F-150 isn't charging like it normally should..it will kill a battery in a bout a day, the ammeter gauge in the dash constantly bounces around etc.

I've swapped alts, v-regs...etc and i cannot get this thing to charge... no matter what i do, it'll charge for about 15 minutes, and then like a circuit breaker being tripped, it just stops charging like the current has been turned off.

Anybody got any ideas where i can look to finally nip this electrical gremlin in the bud??
 
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Old Feb 19, 2004 | 05:46 PM
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Have you had the battery checked for a shorted cell?
 
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Old Feb 19, 2004 | 05:47 PM
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The battery is brand new... i just bought it, so it can't be that. Also it has killed 2 batteries before this one, from the same condition... its got me fairly stumped.
 
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Old Feb 20, 2004 | 05:35 AM
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Check the connections on the back of your alternator. I had a very similar problem recently. I had the wires on the back of the alternator swapped and it would drain a new battery in a couple hours of driving.
 
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Old Feb 20, 2004 | 11:02 AM
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I'd assume if it were connected wrong, that it would not charge at all...but it does charge, just randomly, like a circuit breaker has blown or it has a break in the wiring somewhere....

I'll post back later, i'm going to go do some more investigating.
 
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Old Feb 20, 2004 | 01:29 PM
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Check your wiring. I just had a problem with my truck not charging and it ended up being a wire that was all corroded. Good luck!

-Matt
 
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Old Feb 20, 2004 | 08:51 PM
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Well it started raining on me so i'll have to wait till tomorrow AM to really look at it again... I"m thinking its def in the wiring, as i've noticed a spot in the harness that has been cut and spliced, and is wrapped up in black tape....

More info later.
 
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Old Feb 20, 2004 | 09:23 PM
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i got rid of the ford alt on my 85 cause of the same problem an put a gm delco in there not it got all kinds of power for charging .ez swap to do an only takes a few hours .
 
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Old Feb 20, 2004 | 09:58 PM
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Yeah i've heard of the GM alt swap... if i were going to do that, i'd prefer to go to a 1 wire setup, so i wouldn't have as much pain to go through with setting it up.
 
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Old Feb 21, 2004 | 04:46 AM
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Voltage Regulator is your problem more than likely...15.00 part or less. less than 5 min to change out.
 
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Old Feb 21, 2004 | 04:54 AM
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it wasnt a pain at all the hardest part was drilling out the gm case to fit the ford bolt . as for wiring all u need it the plug for the gm an a resotor put on the white wire . an take the green wire off te ford regulator an put it to it . 1 power wire from the ault to the batt an its done . most it took me was about 1 1/2 hour to do it all .
 
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Old Feb 21, 2004 | 09:25 AM
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Voltage Regulator has been replaced... matter of fact i've replaced it with two of them...so it can't be the problem..as 1 is new and another i've taken off another car that has never had any charging problems at all.
 
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Old Feb 22, 2004 | 01:13 PM
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Well after some more investigating and swapping alternators with my old man... it still isn't charging... and i know his alternator works fine on his pickup...but still..nothing.

I'm thinking it has something to do with him having 3 wires stock connected to his alternator, and i only have 2.

Anybody got any ideas??

I'm open to anything.
 
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