1988 - 1998 (GMT400) Section for all discussion related to the 1987-1998 Chevrolet and GMC trucks.

5.7 tbi turns over, will misfire and die, next crank battery is dead

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Old Sep 23, 2024 | 4:21 PM
  #11  
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Maybe time for new battery cables, or at the very least unhook both ends of both cables, clean and tighten well
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Old Sep 23, 2024 | 4:28 PM
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Originally Posted by EzRadDad
hey man I want to thank you again for hopping on here and taking the time to help me figure this out, I’ll sure keep you updated 👍🏽
I haven't helped yet! Just some guesses of things to check after working on cars since I was 16...
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Old Sep 23, 2024 | 7:25 PM
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Originally Posted by Rednucleus
Maybe time for new battery cables, or at the very least unhook both ends of both cables, clean and tighten well
you could be correct I may try that aswell.
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Old Sep 23, 2024 | 9:53 PM
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Originally Posted by jfmorris
I haven't helped yet! Just some guesses of things to check after working on cars since I was 16...

I very well may have found my issue, I’ve noticed when I charge the battery up fully, it will start, but will end up dying, and the fact that if I try to crank it again it slow cranks and doesn’t give enough power. That pretty much shows me the alternator isn’t working correctly.
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Old Sep 23, 2024 | 10:47 PM
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Originally Posted by jfmorris
I haven't helped yet! Just some guesses of things to check after working on cars since I was 16...

here’s a video of my voltage drop with a fully charged battery idk if this will ring any bells

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Old Sep 24, 2024 | 9:00 AM
  #16  
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Well.... if I didn't know it was a new battery, I would say it needed a new battery. You aren't turning fast enough to crank for sure. You say it acts the same way even with jumper cables from another car that is running?
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Old Sep 24, 2024 | 9:41 AM
  #17  
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That's not an alternater problem if it's turning over like that on a new fully charged battery. Do the battery cables get hot to the touch when trying to start?
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