1993 Buick Century

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Old 01-18-08, 08:13 AM
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Question 1993 Buick Century

My wife and I have a 1993 Buick Century, with the 3.3L V-6. Great car other than some odd miss happenings this morning. My wife left for work, and came back about 15 minutes later. She told me she couldn't get the car to climb above 45MPH without it sputtering, and the battery gauge was reading in the red on the plus side of the gauge. I took the car out, and it ran great for me, I was able to get up to 75MPH without a problem, and the battery gauge never went much past 13V. Any help would be greatly appreciated. Thanks in advance.
 
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Old 01-18-08, 09:55 AM
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I would take and have a charging system check run on it. It has enough miles on it that the alternator could be going (and your wife just caught it at a bad time). Low alternator output would certainly have those symptoms on the diagnosis list.
 

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Old 01-18-08, 10:22 AM
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Would it also cause a high alternator output? Because it was reading to the extreme right of the gauge, which would indicate to me that it was overcharging the battery.
 
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Old 01-18-08, 10:48 AM
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It could have a bad regulator. Those are often built into the alternator. A defective regulator would show up on a test ran through for the alternator.

If the regulator was bad you could have over charge/under charge.
 
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Old 01-18-08, 01:17 PM
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I'll take the alternator to a parts store tonight and have them test it. Sounds to me like it's not too short of failing completely. Thanks guys, I'll let you know what's going on.
 
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Old 01-18-08, 07:17 PM
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Me bad, I overlooked the phrase "on the plus side of the gauge" and was troubleshooting a low voltage reading. Same answer, though, as Bob points out.
 
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Old 01-18-08, 08:19 PM
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Never got a chance to take the alternator out tonight. Been too busy with stuff around the house. Tomorrow though I'll be taking the car into town so that I can just replace the alternator, I don't want to risk being on a trip somewhere, and have the alternator just up and quit on me. That happened to my parents back in the 80s. Going down US1 in Miami Fla. and the alternator in our car literally disintegrated, in the middle of July in the sweltering heat...
 
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Old 01-19-08, 02:29 PM
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The alternator in the car was toast. When they tested it at Advanced Auto today, it was registering 17 volts, and like 15amps if that. Thanks all to responded
 
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Old 01-19-08, 03:53 PM
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Oh well, there goes another towing job I could have gotten.......
 
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Old 01-19-08, 05:36 PM
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Originally Posted by the_tow_guy View Post
Oh well, there goes another towing job I could have gotten.......
That would have been a VERY long tow job...I live in Ohio.
 
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Old 01-20-08, 05:15 AM
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But I give discounts on anything over 50 miles!
 
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