 Alternator Wires Melted, What did I do Wrong? |
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| newto914s |
 Dec 15 2004, 09:04 AM
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Senior Member  Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663  |
We, my father and I, were in the process of changing the alternator (the old one froze) http://www.914world.com/bbs2/index.php?act...81&hl=newto914s
We got a rebuilt from autozone, but after putting it in we figured out it had a bad diode(never go to autozone). I ordered another one from a place online I get a lot of parts for my old Benz from. It was cheap. $80 for a bosch rebuild + 20 core charge, they have free shipping, and I usually receive my order the day after I place it(crazy fast). Now I wasn’t there for this, but after my Dad reinstalled the alternator when reconnected the Battery cables the wire harness on the altenator started to fried. By the time he got the wire off the battery again it had completely melted the wire going from the Alt. to the starter, and singed the wires going to the relay board. What might have caused this? I already ordered a new harness from Jeff, but after I change it I don’t want to melt another one. Could it be the wrong amp Alt. It’s a 55 amp Oh, 1.8 block with D-jet Thanks guys Samson |
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| JeffBowlsby |
Dec 15 2004, 10:09 AM
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,967 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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It would be near impossible to hook up the harness wrong. There is a 3-pole connector just like on the relay plate end of the alt harness and a single fat red wire with an eyelet type wire terminal.
If its wasnt a bad alternator, then my bet would be that the fat red wire insualtion chafed off and shorted to the engine tine (a direct shor to ground). I see this all the time. Be sure the grommets are in place, to isolate the wire from the cooling tin edge. |
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Posts in this topic
newto914s Alternator Wires Melted Dec 15 2004, 09:04 AM
ClayPerrine There are 2 posts on the back of the alternator. O... Dec 15 2004, 09:13 AM newto914s Well, that is a possablity. I was not there at the... Dec 15 2004, 09:24 AM ClayPerrine If you put the charge wire on the ground post, the... Dec 15 2004, 09:25 AM ! Cheap alt rebuilds are just that cheap....either b... Dec 15 2004, 09:33 AM Bleyseng :agree: Dec 15 2004, 10:23 AM rhodyguy there was an old, old thread that addressed an iss... Dec 15 2004, 10:30 AM davep I recall that the stud on the alternator that the ... Dec 15 2004, 11:35 AM dmenche914 Let us know the cause of the problem. Would be in... Dec 15 2004, 12:20 PM newto914s Again, I was not there for the Melting, but after ... Dec 15 2004, 02:04 PM davep As much as anything else, the thing to look for is... Dec 15 2004, 02:16 PM davep Okay, stud height measurement:
1/4" for the short... Dec 15 2004, 08:54 PM dmenche914 Right, look for the burn mark, you should see the ... Dec 15 2004, 09:01 PM SGB If your voltage regulator is fried, it might cause... Dec 15 2004, 10:35 PM davep Since it was the red wire from the alternator to t... Dec 16 2004, 12:09 PM dlo914 since it's an Autozone part, there should be a... Dec 16 2004, 01:48 PM davep Here is the previous thread, found in the Classics... Dec 16 2004, 09:30 PM newto914s Thanks Davep for a link to the Classics artical. I... Dec 18 2004, 02:09 PM redshift <... Dec 18 2004, 06:16 PM
davep I'd like to know if the stud lengths were as l... Dec 18 2004, 08:55 PM |
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