PLEASE point me in the right direction.
Thread Starter
Teching In
Joined: Feb 2010
Posts: 5
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PLEASE point me in the right direction. Ok guys i hope I can get the answer I need on here. Just finishing putting in a LQ4 in my rock buggy, fomally had four banger. The harness i had built kind sucks and after finally geting the thing to run, after about half hour of running i turned it off. And found my red top optima steaming. Apparent ly thes alternater have a votage reulating wire that the pcm needs to recogenze. where is this wireand how can i get this to work properly. Got a big trail run this weekend and could use some help. Thanks Josh
Depends on the PCM you have... if you search on here for wiring diagrams, you might be able to find the one that matches which year PCM you have and it will show you all of the pin-out connections...
Personally I think the alternator itself has an issue, normally they don't charge, when they're missing the PCM signal. Take it and get it tested at your local alternator repair shop and ask them about converting it to a 1 wire alternator, that way you only need to hook the battery to the big post. Your issue sounds more like a ground issue to me, make sure you have a good ground wire from the negative post of the battery to the motor and that the alternator case is grounded
A one wire alternator only have one wire total, the battery wire.
Sounds like the alternator lost some diodes
If you have a local Auto Electric shop, go there, you're better off, then going to one of the big chains, that sell stuff, thats been cleaned and repaired and pass it off as rebuilt.
