얼터네이터 교환 수리 사례
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2026. 6. 30. 작업
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Alternator grinding - Is it OK to drive to mechanics?
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I had a '91 Suburban with which the alternator was making noises like you are suggesting. This Suburban was new enough to have a serpentine belt, like yours. I let it go too long and the alternator seized up. When this happened the force was enough to stop the engine dead in its tracks. Yes, the serpentine belt has that much grip ... I was quite surprised. This is the main thing you'd see if your alternator were to seize up while you are driving it. If you took the belt off from there, the water pump would not be running if you ran the engine, so you'd have to be aware of overheating. This endeavor did no damage to any other part of the vehicle, including the serpentine belt (I just reused it when I put the new alternator on). I did have to leave the vehicle at the side of the road and make a trip to the parts store and back. The new alternator took about 15 minutes to change and it was back on the road. If this happens to be an idler or tensioner pulley which is making all the noise,
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For example, it seems switching from some high wattage headlights to much lower wattage LED's frees up more of the alternator's power capacity. But, does this mean the alternator (or other electrical components like the voltage regulator) will start to run hotter? (to dissipate excess power via heat?) Or, does the decrease in overall electrical load simply get handled by just easing up the load on the engine making it easier to spin the alternator in the first place?