Problem with charging system-NEED HELP!

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Sep 13, 2008 | 10:24 PM

gary85314

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Problem with charging system-NEED HELP!

I have a 79 F250 4X4 with 351M, Auto trans. Purchased it a few week ago. The idoit light was on and read "alt". It had a new regulator and altanator on it from Checker Auto( OH NO ). I took it to them and the Altnator was putting out 14.3 Amps.They could not check the regulator. I returned home and removed the regulator off of a 1975 F250 parts truck I have and replaced the one on the 75. The ALT light went off. I drove the truck for a short time and then the light started coming on and off and then stayed off. I took the truck to the mountains about 60 miles away. On the return trip the ALT came on and remained on. I parked the truck so I could make a side trip to the emergancy hospital and get my finger stiched up.Today, a week later I got in the truck and drove it another 15 miles with the ALT light on. At the end of the 15 miles the battry was dead. I put a fully charged battery in the truck and contuned to drive some with the light on. I started back the 15 miles and after a mile or so the light goes out, then it came back on and then off and so on untill it stayed off. Does any body have any idea as to what I should do? (sorry for the typing but finger is still stiched up)

Gary
Fords will be running long after th GM Junk is on the scrap heap!

Sep 14, 2008 | 11:54 AM

Dr. Dirt

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From: Goliad, Texas

it kinda sounds like something is wrong with the wiring in your truck

Sep 17, 2008 | 12:03 AM

grgnwen

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put a delco one wire in it and eliminate all problems!

Sep 19, 2008 | 04:43 AM

twisted_axel

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From: FT Hood, Tx

Is the part number for the 1975 Regulator the same as the part number for the 1979 Regulator?

Sep 19, 2008 | 08:07 AM

gary85314

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I am fairly sure they are same. Maybr some out there would know for sure.

Sep 19, 2008 | 08:42 AM

fastfarmer

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From: southwest Wisconsin

The intermitent nature of this problem acts like a bad regulator. You probly already checked, but I'll ask anyway, is your fan belt tight?

Sep 19, 2008 | 03:19 PM

gary85314

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Yep, fan belt is tight. Changed regulators.

I am going back up in thw mountains tomarrow and will see what happens

Gary
Fords will be running long after the GM Junk is on the scrap heap!