1990 Other Dodge Models alternator

1990 DODGE
100,000 MILES • V8 • 4WD • AUTOMATIC
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MIKEPEN
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i have a 1990 dodge 4x4 power ram ive replaced the alternator but the system is still not charging. with the truck running i am getting interminante voltage. while truck running i will get 14 volts one time the next 12 or below. i was told the battery was good. there must be something else failing. this alternator has an internal regulator. is there a pcm that controls the charging system? running out of idea's please help
Oct 19, 2010 at 4:34 AM
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HMAC300
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the only thing that controls it is internal regulator on the alternator. On the 3way connection on the generator here is a black wire if you follow it back there is a fusible link on it. it may be making contact then not as it may be connected by one or two strands. it will be a smaller wire connected to a larger one or a fuse.. do not confuse the black ground wire with this one as there is a black ground wire as well or should be that contacts the alternator.... Also check yoru connections on the alternator as a wire that has only a couple of strand connection will do this as well...
Oct 24, 2010 at 3:22 PM