Car starts but dies within seconds
Car would be completely dead, no power at all. Jumped it, it worked for a bit. So I replaced the battery, that lasted a few days so I replaced the alternator. Also a few days it was fine, then again. no power at all. Every time I jumped it I had to let it charge a few minutes. This time, I got it to start after jumping it but it died within a few seconds. I start it, it turns over fine but again dies within a few seconds.
Pull the alternator and have it tested
Tested it, and it works fine.
Always Power, Fuel, Spark. So check fuel pump, check relays, could also be a failing starter, and lastly, even if an alternator tests positive(machine tested at auto parts store) they can still be failing! I have had several that tested ok, but my problem was not fixed until I replaced them, the last time being on my 2000 Honda Accord V6, which went completely haywire ( idle, power, dying, backfiring, and all electrical systems going completely nuts) while driving down the road.
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