jersey280 Posted August 7, 2022 Share Posted August 7, 2022 Hey guys, Been dealing with an issue regarding starting for a while now. I own a 1976 280z, which struggles to get started but runs fine once it is (separate issue all in itself I am tackling). The issue I need help with today is the quick drawing of my battery while attempting to get it started, I almost always have to use a jump pack to assist. The battery is a couple year old optima red top that once off the trickle charger is around 13.6. It also has new battery cables, reman starter, new ignition switch as well. I can really only crank it for about 15-20 seconds and the battery becomes basically dead without the assistance of a jumper pack. While searching for answers, a couple posts have suggested a possible grounding issue, so I cleaned up the battery to starter ground (top bolt of starter) and the main body ground above the battery. Other than that, I am at a loss for what is causing this large draw. Any suggestions would be great! Thanks again! Quote Link to comment Share on other sites More sharing options...
bunkhouse Posted August 8, 2022 Share Posted August 8, 2022 What is the battery voltage when it's time to add the jump pack? I'd also check everything from the battery to the starter for heat (either a fingertip or infrared sensor) after trying to start it. Quote Link to comment Share on other sites More sharing options...
jersey280 Posted August 8, 2022 Author Share Posted August 8, 2022 Bunkhouse, It sits well over 12.5 volts, gives every indicator of a good battery. Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 8, 2022 Share Posted August 8, 2022 Get the battery load tested. Sounds like it's dead, like unchangeable, won't hold a charge. Quote Link to comment Share on other sites More sharing options...
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