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06-12-2021, 05:17 PM
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#1 |
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Registered User
Join Date: Nov 2020
Location: Fredonia
Posts: 28
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Alternator spikes
Ok, this isn't for my Chevy C10 but this is the only automotive board I subscribe to so maybe you guys can help me. 1964 Nova Gasser, 383 stroker, 4 speed. I put a 1 wire chrome alternator in with battery in the trunk. 10 guage wire from alternator to cut-out switch in the trunk and then to the battery. The other night the voltmeter read all the way to the right (18+ volts). When I stopped the car it would not start because of blown 40 amp fuse in the wire from alternator to cut-out switch. New fuse and it started and ran normally with meter reading around 13 v. Am I looking at an alternator problem or possibly something else? Thanks for the help. Chief
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10-12-2021, 01:04 PM
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#2 |
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Registered User
Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 766
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Re: Alternator spikes
Most likely Volts Regulator, If your alt is older then 72 it Reg. is on the body motor bay. If it 73 and newer in the ALT. The Reg maybe starting to go bad on it's way out. I would keep eye on and get it tested, could blow up the Batt for over charging at worst melt wiring or burn up ALT, or ruin batt. Pretty easy to fix or if you can't get a new ALT if that part bad.
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 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bedWas a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change. |
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