The Ford Barn

frank55a · 06-20-2016, 05:29 PM

I have a Nu-Rex 6 volt positive ground alternator that I purchased about 7 years ago. It has given me great service, however lately it seems to be acting up.Starting this year it has always been charging.About 6 weeks ago I went for a 65 mile drive and about the first 20 miles it was pegged high, then it slowly dropped off to about 15 amps and the rest of the drive the charging rate remained 12-15 amps.I have had it out several times since then and the charging rate remains about 12 amps.

A couple of notes: 1) I have not made any changes to the electrical system; 2) All connections seem tight; 3) Apparently there are no grounds as the battery seems fully charged, the starter seems to spin at normal speed and the A starts right off.

Anyone ever have a similar problem? If so, what was the fix? Are there any tests I can run on the alternator? Any suggestions?

06-20-2016, 05:29 PM	#1
frank55a Senior Member Join Date: Jun 2010 Posts: 993	Alternator Problem I have a Nu-Rex 6 volt positive ground alternator that I purchased about 7 years ago. It has given me great service, however lately it seems to be acting up.Starting this year it has always been charging.About 6 weeks ago I went for a 65 mile drive and about the first 20 miles it was pegged high, then it slowly dropped off to about 15 amps and the rest of the drive the charging rate remained 12-15 amps.I have had it out several times since then and the charging rate remains about 12 amps. A couple of notes: 1) I have not made any changes to the electrical system; 2) All connections seem tight; 3) Apparently there are no grounds as the battery seems fully charged, the starter seems to spin at normal speed and the A starts right off. Anyone ever have a similar problem? If so, what was the fix? Are there any tests I can run on the alternator? Any suggestions?