Weird Charging Problem

[wishihadatalon]

I did a search on this but wasn't able to find anything. A little background, the car sat in a field for 6 years and the alternator harness was chewed up by field mice. I got it all buttoned back up and got the car started but now I am having the issue.I also had to replace the battery, so that is new.

The issue is no charging when the alternator fuse is plugged in. If I disconnect the harness, I get 16-17 volts (I know this is an issue as well), but as soon as I plug the fuse in and re-start the car, I run off of the battery. Things that I thought of were, wrong wires connected to new harness connectors. I verified that my power steering pressure switch wire is continuous to the ecu (pin5). When doing this, I also checked the regulator wires (I assume that's what they are) and one was continuous to my airflow wire (pin3) which has been snipped for an AFC install. What is very confusing for me, is the voltage coming out of the alt until its connected to the battery.

Any insight that someone could provide would be awesome.

Thanks,

TJ

 

[Rsawd95dsm]

Is the alternator the one that sat in the field along with the car? Could be a bad voltage regulator inside the alternator.

 

[1G Eclipse94928]

Is the alternator the one that sat in the field along with the car? Could be a bad voltage regulator inside the alternator.

+1 I would rebuild the alternator if its been sitting so long, or get a new one the 90amp upgraded one has a lifetime warranty from auto zone.

 

[wishihadatalon]

I had a few alternators laying around when I put the car back together, but I suppose its possible I grabbed the wrong one. Any input on continuity from one of the voltage regulator wires to the #3pin on the ecu harness? Especially when the wire is cut from the harness. Some wiring issue inside the AFC? Its weird because the plug was only connected via this wire, so I know I hooked it up properly.

 

[1990TSIAWDTALON]

+2 on the 90 amp upgrade, I just did it to mine. Got one at O'riellys that has lifetime warranty and came from a '96 Galant and charges great and is a direct bolt on!!! Check it out here:

List: Alternator - 1996 Mitsubishi Galant | O'Reilly Auto Parts

 

[wishihadatalon]

Had a spare salt laying around and tried it. Consistent 14.4v now. Thanks guys.