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Alternator stops charging when you turn on the headlights.

Customer Question
The charge will drop down...
Alternator stops charging when you turn on the headlights. The charge will drop down to 12.5 volts. This is a new alternator. I have cleaned G105 and G100. With the A/C on high and radio on i get 13.8 volts at the alternator. The car is a 2000 Cadillac Eldorado 4.6l vin 9.
Submitted: 11 months ago.Category: Cadillac
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Answered in 10 hours by:
8/20/2017
Cadillac Mechanic: Eric, Automotive Repair Shop Manager replied 11 months ago
Eric
Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 34,897
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

I am sorry that you have not been helped yet. I just came online and saw your question

Ok, I need to get the last 8 of the vin number to pull the charging system schematics to see where the issue is

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Customer reply replied 11 months ago
I won't have it until in the morning. As soon as I get to the vehicle I will get it to you. Thank you
Cadillac Mechanic: Eric, Automotive Repair Shop Manager replied 11 months ago

ok, sounds good. I am here all day tomorrow

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Customer reply replied 11 months ago
YB702382. I'm sorry I couldn't get to it earlier.
Cadillac Mechanic: Eric, Automotive Repair Shop Manager replied 11 months ago

Sorry, I will have to opt out as I do not have the schematics for it. If another expert does, they will post here to you

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Customer reply replied 10 months ago
Five days with no help
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Eric, Automotive Repair Shop Manager
Category: Cadillac
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