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Do alternators squeel/whine from 0-20mph? Or is it my belts?

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Old 01-30-2012, 08:51 PM
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Do alternators squeel/whine from 0-20mph? Or is it my belts?
Something's whining at cold start ups in front-passenger side of my car. I think its the belts, but why would they suddenly start whining? Is that normal sign of wear on belts?
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Old 01-30-2012, 09:04 PM
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Could be either one really. My jeeps alt whined before it died (not saying yours will). Also the belts could be dry. Maybe try some dressing? Does it whine at idle
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Old 01-30-2012, 09:20 PM
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Your alternator might be on its way out. I remember mine started to whine right before it blew. PITA to change out if you're doing it yourself but still doable.
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Old 01-30-2012, 09:26 PM
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LOL at "Cold Start ups" in Los Angeles. just kidding, im just jelly of your climate. Could be either or, check the tension on the belt and also for wear. that's probably the cheaper route to start.
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Old 01-31-2012, 02:04 AM
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Originally Posted by c_elliott
Could be either one really. My jeeps alt whined before it died (not saying yours will). Also the belts could be dry. Maybe try some dressing? Does it whine at idle
DON'T put belt dressing on!! That only makes the belt sticky which will attract any dirt on the road and make the belt even worse.
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Old 01-31-2012, 02:27 AM
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on my 2nd alternator from napa, after it warms up and then sits it whines and i've even heard a loud whistle from time to time. maybe compressor bearing from non-use in winter?
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