I replaced my alternator with an after market 80 amp model. After about 150 miles my voltage regulator stuck and I would get +40 amps with increased RPM. I would get 0 amps at idle. Tapped the regulator a bit and it would return to normal operation but only for a short time. This regulator I suspect is sthe orignal but I can't swear to it. I know it has been in there for +30 years because that is how long I have had tis car. I know the alternator is higher in amps than stock. NAPA has a regulator #VR142SB for a 66 that is rated for a 63 amp alternator. Question is a high output alternator related to regulator failure and will this NAPA 63 amp regulator be OK with an 80amp alternator.
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Re: 66 Voltage Regulator/Alternator
Dennis:
I would try cleaning the contact points inside. They might be dirty, or sticking.
Joe -
Re: 66 Voltage Regulator/Alternator
Would I use an electrical contact cleaner like available at Radio Shack?Comment
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Re: 66 Voltage Regulator/Alternator
Dennis:
Remove the cover and examine the points first. You may have to use a small points file to remove any pitting. After you do that, then use the contact cleaner to remove any residue. Cleaning fluid (carbon tetrachloride) also works well.
JoeComment
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Re: 66 Voltage Regulator/Alternator
Also use some fine sandpaper between the contacts along with the electronic spray cleaner. (Blow any extra cleaning liquid off the coils.)Comment
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