4 BATTERYS 2 ALTERNATORS LATER. STILL NOTHING

ONLY for ADVANCED technical discussion about the 240sx!
gian52
Posts: 40
Joined: Wed Mar 26, 2008 5:51 pm
Car: 240sx s14 95
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i have a some of electrical short idk where to start. its not a parasite cause my car doesnt die overnight. if i get a new battery in a matter of less than 2 days its drained alrdy. i ran new grounds from the bat. terminal to the chasis to motor to the wire harness. my battery terminals check in at 12.63. but when i go check in my alternator positive terminal its fine it reads the same when the car is off once i turn on the car it stays at 0 !!! and when i turn on my ac and my headlight the volt meter drops to 10.-- to 11.-- on the battery ?? any leads guys i hate electrical gremlins


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zerepdivad
Posts: 2010
Joined: Thu Nov 24, 2005 5:39 pm
Car: '90 240sx . '02 Lexus IS300
Location: WI

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What's your voltage at the alternator fuse when the vehicle is running?

zauber
Posts: 61
Joined: Mon Oct 18, 2004 4:29 am
Car: 1991 Nissan 240sx SE coupe powered by s14 sr20det fully built. roughly 500hp

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check your grounds. or try installing a grounding kit.

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

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Check the cable that goes from the alternator to fuse to positive terminal on battery. Also check positive battery terminal where the two white wires plug in. You have a huge voltage drop from alternator to battery.

airman86
Posts: 320
Joined: Wed Feb 11, 2009 4:55 pm

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