Hi,

My friend and I just finished my engine swap in my 1986 Camaro. We swapped the 2.8 Maf to a 355 tpi with speed density. I went out on my first drive to the gas station and back. About halfway back it died coming to a stop at a light and wouldn't start after like a dead battery. I jumped it and hauled *** home and put the battery on a charger but the voltmeter said it was 12.6 volts. I charged the battery and took it to advance auto parts and they said it was fine. I put it back in my car and checked the voltage and it was staying steady at 12.8 volts. I started the car and checked the voltage when it was running and it was staying at 14.3 volts. Any idea what's going on?

Thanks

 

Check the wire from the starter that feeds the fuse block, if it's corroded through it will cause intermittent electrical problems. This one wire feeds 95% of the electrical system in the car.