90 ls400 issues
#1
Rookie
Thread Starter
90 ls400 issues
last night I was driving along then I lost all power items. radio, gauges, heat, and drive lights.
the things I did today was test ALL relays, fuses, grounds, and cleaned the battery terminals and any discolored open connectors. all of the fuses are good, all relays are good, I also checked the alt and when everything works it charges at 14v but when everything didn't work the car dies when the battery is disconnected and it show a voltage drop to 12v so that means that the alt is not charging. I disabled my ps so no its not leaking on to the alt.
my question is there any other reason for the lost of all powered items.
the things I did today was test ALL relays, fuses, grounds, and cleaned the battery terminals and any discolored open connectors. all of the fuses are good, all relays are good, I also checked the alt and when everything works it charges at 14v but when everything didn't work the car dies when the battery is disconnected and it show a voltage drop to 12v so that means that the alt is not charging. I disabled my ps so no its not leaking on to the alt.
my question is there any other reason for the lost of all powered items.
#2
Lexus Champion
sounds like a bad battery, replace it with a new one and then recheck the voltage with car on and then with car off
should be greater than 13.6V on and 12.5V off
should be greater than 13.6V on and 12.5V off
#7
Moderator
Sounds like a slip ring issue to me.
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#10
Lexus Champion
now when I hit a bump it will shut all powered items and once I hit another they all turn back on.
this should not be that hard to find, actually, be glad it comes and goes with vibration, this makes it much easier to locate - have someone sit in car and watch powered items, while you go under hood and start whackin stuff with a soft mallet that could be suspect - i.e. ground strap connections, battery cables, connections etc.
Last edited by LScowboyLS; 02-17-13 at 07:31 PM.
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