Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

alternator gone...only have 4hr's to fix!

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Old Jul 16, 2004 | 08:08 AM
  #1  
no_car_yet's Avatar
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From: newfoundland Canada
alternator gone...only have 4hr's to fix!

okay i thinkn my alt is gone...is there anything else i can check first? is the alternator on a fuse...where is the fuse?

if i don't get this fixed in 4 hours...then i'm not gonna be able to go to the track tomorrow! help fast!
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Old Jul 16, 2004 | 10:04 AM
  #2  
dyeager535's Avatar
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Joined: Oct 2001
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From: Seattle
Car: Which one?
Engine: 355
Transmission: 465
What voltage are you getting out of the alternator when the vehicle is idling, heater on high, and headlights on?

Really need a voltmeter to check this.

You can measure off the battery terminals, and if it's over 12 volts (that would be low, should be at least 12.8 or so) then I wouldn't worry about the alternator, unless it is an intermittent problem.

The "right" way to measure alternator voltage output is off of the alt. itself, but sometimes it's hard to get to the terminals. But if your battery is seeing 12+ V under the above conditions, it's not likely your alternator is the problem.

Probably would help to describe the problem a bit more though too. But voltage readings don't lie, regardless of symptoms.
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