Major electric draw 86 300zx - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
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post #1 of 4 (permalink) Old 05-10-2019, 11:05 PM Thread Starter
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Major electric draw 86 300zx

1986 300zx 2+2 auto. 139K. Has been in storage over winter. Put new battery in mid-March. Took out of storage April 30 with no issues. Now battery goes dead in 2 days. 11.4v draw on system. Have removed each fuse and rechecked draw on system after each removed. Same 11.4v. Have disconnected alternator (per suggestion in one of the threads I looked at). Have gone through and done most of suggestions in related threads. Have looked through FSM and Haynes and not really finding anything to help. Suggestions? Worst part is, I need to sell this one as I bought a different one.

2015 Dodge Ram 3500 4x4 Quad Cab
1986 300ZX NA 5spd
1986 300ZX 2+2 5spd (parts car)
1979 International 886


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post #2 of 4 (permalink) Old 05-11-2019, 11:32 PM
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I think a draw would be measured in amps, not volts. Voltage is electrical potential while amps is electrical current. How are you determining the 11.4v draw? If you leave your battery disconnected, and reconnect it after two days, then will the car start?
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post #3 of 4 (permalink) Old 05-12-2019, 01:51 AM
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your alternator is probably going bad. you should test it. if it fails, then you've probably found your problem. in that case, upgrade to the higher amp maxima alternator.

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post #4 of 4 (permalink) Old 05-12-2019, 02:07 PM
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Here is a video that goes through looking for parasitic draw. He uses an amp meter but no special equipment.




1984 300zx non-turbo
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