Bancas Posted January 26, 2012 Share Posted January 26, 2012 I have a 1990 Accord LX 2.2L manual transmission. This car was originally an automatic but the previous owner swapped in a manual transmission and a newer engine. When I took it to a shop, they told me that whoever did the swap didn't ground some wires correctly but that they took care of it. The car was running fine for a few weeks, then one day I went out to try start it and it was completely dead. I had been driving it just an hour earlier but now when I turn the key it makes no noise and no lights come on or anything. So I figured that the battery was dead, gave it a charge, same thing. I also got the battery checked and it was fine. I then checked the fuses and the 80a main battery fuse was blown. I replaced that fuse and as soon as I reconnected the battery it blew. I then disconnected the alternator wire from the fuse box and replaced the fuse again. This time the car did come on when I put the key in the II position but it did a bunch of weird stuff. The windshield wipers came on and one of the running lights came on. So now I determined that the problem was in the alternator because whenever it's connected to the fuse box the main battery fuse blows. I need to know if it is in fact my alternator and if I should replace the whole thing or just a part of it. The alternator plug is a bit corroded so maybe that could be the problem? Battery posts and terminals appear to be fine. Any help will be greatly appreciated. Thanks. Link to comment Share on other sites More sharing options...
Raley Posted January 27, 2012 Share Posted January 27, 2012 1, that plug is not bad. 2, your battery terminals aren't bad. but the large wire from alt to where it connects at the fuse box is probbaly shorting somewhere... or internally in the fuse box. trace some wires. Link to comment Share on other sites More sharing options...
Bancas Posted January 29, 2012 Author Share Posted January 29, 2012 I replaced the alternator and the fuse is no longer blowing, however the car still wasn't getting any power except for the horn. I then realized that the main ground wasn't connected to the negative battery terminal. I connected the ground and whenever I try to connect the negative terminal to the negative battery post, sparks fly off and it melts the post. Link to comment Share on other sites More sharing options...
Raley Posted January 29, 2012 Share Posted January 29, 2012 you have a short. probably a main line. Link to comment Share on other sites More sharing options...
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