Got my 84 4cyl. out for the first time this year. It started right up ,good solid idle ,so I head out and about 1/2 mile away at 40mph the gauges all peg to the right,the lights flicker and I pull over. The car never died,I went back home ,it didn't happen on the way back.
I checked for a blown fuse,battery cables , every things looks OK. IT starts right up ,no hesitation at all,sounds great.
I'm afraid to take it out and something major happens. Any ideas?
PS: New starter,alternator.rear brake lines,battery cables last fall.
Recheck all your cable connections to make sure they're tight. Generally, fluctuating voltage is either a loose cable at the battery or alternator, or a dying voltage regulator inside the alternator itself.