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Message: [QUOTE="tankmech_250, post: 24387, member: 949"] What could keep burning up altenators? My original went bad so I bought a "guaranteed" good used one. Put it on nothing had it tested it was now bad. Bought a brand new one from Advance and put it on last night. Today tested while running and now its only putting out 11.76-11.82v and only 30A. What could cause it to go bad again. All fuses are good, batteries are good, all wires are tight. Also while running the charge light is on but if I shut it down and start up again occasionally the light is out and it kinda sounds like I have an air leak or something and the volts are at about 10. After a few minutes the sound goes away and the light comes back on and the volts jump up to around 12. Thanks in advance. [/QUOTE]

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