babbot1 wrote:
Capt. Hoss wrote:
I went thru this in the spring of 2013. New alts are expensive because they are marine rated (spark proof). Like $200-$300 worth! I took it to a parts store and they were unable to test it, because of the type of connections it has. I did call a local marine mechanic and he said he would have it rebuilt. And suggested a place and they tested it there and it cost like $80 for a rebuild with a 1 year warranty. I have the same motor you do but mine is a '90. Check to see if it can be rebuilt before you go out and spend a fortune on a new one.
+1 on getting rebuilt. Also, if you say it stays at about 13 volts even at idle then it sounds shot to me.
Yeah that's what I was thinking. Getting it rebuilt because shopping around I have noticed that a new Delco style marine alt is at least 160 (amazon). If I can get mine rebuilt for half that....
Yeah it is hovering just below 13 (basically the voltage of a good battery) and when I flip anything on, or tilt trim it drops to just over 10 then comes back up to almost 13v. So I know the batteries are good. That, and the alternator gets really hot (too hot to touch) while running I think at least one diode is gone if not an internal short.