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Dead Altenator, can anyone confirm.

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Old 04-15-2003, 05:48 PM
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Car: 1986 Camaro SC
Engine: Bolt-on/cam 305
Transmission: 700R4 w/ 2500stall
Axle/Gears: 3.73 10bolt Posi
Dead Altenator, can anyone confirm.

Started the IROC up today, charged a bounce 13 volts for about 90 seconds, and then just 12 volts, not charging. I drove it to get gas, and shut it off. Started right up, still not charging. Drove it the mile back home, hit the altenator a few times with a ratchet, not charging. Let it set 20 minutes, started right up, still nothing. This would definatly be the altenator right? I know I know, get it tested. I'm just trying to sell it, and don't have the money to chase parts on a car I won't even have. I must say its one hell of a battery though... started and ran a whole bunch of times with no charging! Good stuff!
Old 04-15-2003, 06:11 PM
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Car: 4
Engine: 6
Transmission: 5
Possibly so... you might want to check it with a real voltmeter to be sure; but it sounds like you need a new alt.
Old 04-15-2003, 07:56 PM
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Car: 1985 Iroc-z
Engine: 355 sbc
Transmission: 700r4
I think autozone/advanced auto will check them too for free if you don't have a meter, just take an extra battery for the ride =]
Old 04-15-2003, 08:15 PM
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Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
How do you check the voltage, can you use a multi-meter? I don't want to burn mine up.
Old 04-15-2003, 09:20 PM
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Car: 1986 Camaro SC
Engine: Bolt-on/cam 305
Transmission: 700R4 w/ 2500stall
Axle/Gears: 3.73 10bolt Posi
I'm getting my voltage based on the gauge in the car. I know they tend not to be terribly accurate, but it has always corresponded correctly to blinkers, fans, headlights, rear defrost, etc. You could hear the altenator load and unload when the voltage was up and down at idle.

Another question, how long do you think the car would run without the altenator. This is putting no accesories on, just running and driving. I have a guy that came and looked at it today, but we didn't take it for a test drive because of the dead alt. He said he's bringing a fresh battery tomorrow, so we can go out, if it dies, we'll get it back on the fresh battery. He likes it, if it test drives good for him... and it will, he said he'll buy it. I sure hope so! I love it, but I need the bucks right now. Thanks guys.
Old 04-16-2003, 01:38 AM
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Since you've been starting it and running it without the alternator charging.. not very long. On a full battery I think it should last at least an hour(ask me how I know that ).
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