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Jeep Wrangler YJ
YJ General Discussion
109A Alternator Upgrade Problems
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<blockquote data-quote="erikmuntz" data-source="post: 426483" data-attributes="member: 18887"><p>Alright;</p><p></p><p>I found that the alternator was bad so got a new one in and installed it. Jeep fires right up but with both of my batteries will not charge above 9V with the alternator. The thing is the alternator is pushing power to the rest of the Jeep, and with all accessories on (light, air compressor, etc) it doesn't die. Even when I use the horn the battery will plummet in voltage but then immediately return to 9V.</p><p></p><p>My trouble shooting so far:</p><p>-the starter and the alternator are on the same fusable link. If it had been blown, in theory, the circuit would be open and wouldn't be able to start</p><p>-checked all connections and confirmed no open circuits</p><p>-cleaned and added electrical grease to as many of the connectors as possible.</p><p></p><p>I'm going to have my battery tested at the local Autozone; but I have two of the same type (Altima Red Tops) and have the same problem with both. Unlikely but possible I have two bad batteries.</p><p>Any ideas what else it could be if the battery isn't bad?</p><p>Thanks in advance,</p><p>Erik</p></blockquote><p></p>
[QUOTE="erikmuntz, post: 426483, member: 18887"] Alright; I found that the alternator was bad so got a new one in and installed it. Jeep fires right up but with both of my batteries will not charge above 9V with the alternator. The thing is the alternator is pushing power to the rest of the Jeep, and with all accessories on (light, air compressor, etc) it doesn't die. Even when I use the horn the battery will plummet in voltage but then immediately return to 9V. My trouble shooting so far: -the starter and the alternator are on the same fusable link. If it had been blown, in theory, the circuit would be open and wouldn't be able to start -checked all connections and confirmed no open circuits -cleaned and added electrical grease to as many of the connectors as possible. I'm going to have my battery tested at the local Autozone; but I have two of the same type (Altima Red Tops) and have the same problem with both. Unlikely but possible I have two bad batteries. Any ideas what else it could be if the battery isn't bad? Thanks in advance, Erik [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
109A Alternator Upgrade Problems
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