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Old 01-03-2008, 09:37 PM   #1
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Default Voltage drop in 04 GTP

The volts in my girlfriends 04 GTP drop from 14.8 to 11.4 sometimes 11.1 while stopped, when the car is first started, even if the car is already warm. I thought maybe the alternator belt was slipping because it does every 3 seconds ( I counted) and last almost 2 seconds, but when i pulled on it was tight and wouldn't budge. I also tried to turn what the belt sits on but that didn't move either. Hopefully I wont have to replace the alternator because her dealerships is talking at least $600. Has anyone ever experienced this or can help diagnost the problems. TIAfor any input.
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Old 01-04-2008, 05:08 PM   #2
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Now she is afraid it will cut off so she wont drive it, so now im stuck with it and im footing the gas bill for both
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Old 01-04-2008, 05:11 PM   #3
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Have you tried turning off all the accessories and see what happens? If you have the key on, but not running, will it do anything similar?
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Old 01-04-2008, 05:13 PM   #4
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have the alternator, and possibly the battery, tested at your local parts store.

you should be able to get a used alternator for under $100, or a new one for $250, they are very easy to install on the 3800.
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Old 01-04-2008, 08:14 PM   #5
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Quote:
Have you tried turning off all the accessories and see what happens? If you have the key on, but not running, will it do anything similar?
When I did this the lights didn't flicker, nor did the volts drop.
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have the alternator, and possibly the battery, tested at your local parts store.
I will be taking it in first thing in the morning. If the alternator is bad are there any brands that you would recommend, or am I better off getting a factory replacement from the dealer. Thanks for the feedback
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Old 01-05-2008, 02:24 PM   #6
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This belongs in Other 3800'*
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Old 01-05-2008, 04:18 PM   #7
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Do you have any kind of aftermarket stereo, amp, or subs?
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Old 01-06-2008, 04:06 AM   #8
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Sorry for posting in th wrong place
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Do you have any kind of aftermarket stereo, amp, or subs
No everything is stock. It turns out the alternator is going bad, but I have books to buy for school so it will have to wait a week or two
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