Help! Serious Electrical Problems!, The weirdest thing I've ever seen... |
Help! Serious Electrical Problems!, The weirdest thing I've ever seen... |
Apr 12, 2005 - 2:03 AM |
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Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
I'm so confused and scared right now...I can't figure out for the life of me what's going on with my car.
It started with me trying to start it, and only the fans turning on. I checked the fuses and none were blown, so I checked the switched wire at the starter, and it was giving me no voltage. I then unplugged the battery and went inside to take a break. When I came back out and plugged the battery back in, I noticed that the trunk light didn't turn on. I looked at the dash and the door open light wasn't on either. I tried turning on the parking lights and they didn't turn on. I tried the horn and it didn't work. Basically, nothing on the car works. This is where it gets confusing. I've got a fuse 6" from the battery, and it's in good shape. Figuring I'd popped some other fuse, I checked all of them in the dash and under the hood, and they were all good. I pulled the main 50 amp fuse under the hood and tested voltage on the hot side. Voltage started at around 10 volts and over a couple seconds rose to 12.4 volts and held there. I then tried the same thing for the horn fuse under the hood, and it started at about 8 volts before rising to 12.4 and staying there. At this point I disconnected the negative cable and came inside. Someone suggested testing voltage between the terminals and the clamps with the headlights on to test for a bad battery connection, but this yielded no voltage. At the battery terminals, I'm getting 12.4 volts. At the battery's fuse and a bolt in my trunk, I'm also getting 12.4 volts. At this point, I'm so confused. I've never seen anything this weird in my life. Anyone have any ideas? -------------------- New Toyota project coming soon...
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Apr 16, 2005 - 1:43 PM |
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Administrator Joined Aug 23, '02 From Seattle, WA Currently Offline Reputation: 14 (100%) |
QUOTE(Dm_Vinny @ Apr 16, 2005 - 11:19 AM) Coomer, Me personally I'd start off tracing everything. If I cant find anything wrong than I'd swap out the wires for new ones, if it still dont work, replace the alternator, I'm not sure but is our alternator have a built in regulator? never checked, if it doesnt that swap out the regulator. [right][snapback]272359[/snapback][/right] I actually found out that I am getting +12 volts at the alternator. Before, I was just testing with a bad ground. QUOTE(madmods @ Apr 16, 2005 - 11:22 AM) What did you actually wire from your alarm? Starter kill? Did you cut your ignition wires? You door lock wires? [right][snapback]272360[/snapback][/right] I never cut my ignition wires, and my door locks are aftermarket. Right now, there is only wires ran for the positive brake input, door trigger, parking lights, ignition 1, ignition 2, and starter, and they're all completely taped off. Can anyone explain what causes voltages to start from 8-10 volts and then rise to +12.4 volts over the course of a few seconds? This effect gets worse as the ground for the multimeter is placed further away from whatever I'm testing. -------------------- New Toyota project coming soon...
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Apr 16, 2005 - 2:16 PM |
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Enthusiast Joined Mar 19, '04 From Scottsdale, Az Currently Offline Reputation: 2 (100%) |
QUOTE(Coomer @ Apr 16, 2005 - 6:43 PM) QUOTE(Dm_Vinny @ Apr 16, 2005 - 11:19 AM) Coomer, Me personally I'd start off tracing everything. If I cant find anything wrong than I'd swap out the wires for new ones, if it still dont work, replace the alternator, I'm not sure but is our alternator have a built in regulator? never checked, if it doesnt that swap out the regulator. [right][snapback]272359[/snapback][/right] I actually found out that I am getting +12 volts at the alternator. Before, I was just testing with a bad ground. QUOTE(madmods @ Apr 16, 2005 - 11:22 AM) What did you actually wire from your alarm? Starter kill? Did you cut your ignition wires? You door lock wires? [right][snapback]272360[/snapback][/right] I never cut my ignition wires, and my door locks are aftermarket. Right now, there is only wires ran for the positive brake input, door trigger, parking lights, ignition 1, ignition 2, and starter, and they're all completely taped off. Can anyone explain what causes voltages to start from 8-10 volts and then rise to +12.4 volts over the course of a few seconds? This effect gets worse as the ground for the multimeter is placed further away from whatever I'm testing. [right][snapback]272379[/snapback][/right] What actually are you testing to get this spike from? Any relays in there? |
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