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by 240bri
11 Oct 2014, 20:53
Forum: 240, 740, 760, 780, Bertone, 940, 960, V90, S90
Topic: 1991 Volvo Alternator Won't Charge Battery
Replies: 8
Views: 3716

Re: 1991 Volvo Alternator Won't Charge Battery

It turns out there was no short circuit, the resistances I was reading were just the loads of the different relays and devices. I hooked everything back up and no fuses blew. I jumpered from b+ to d+ with an in line toggle switch and 5A fuse and now the brick is back.
by 240bri
11 Oct 2014, 20:53
Forum: 240, 740, 760, 780, Bertone, 940, 960, V90, S90
Topic: 1991 Volvo Alternator Won't Charge Battery
Replies: 8
Views: 3716

Re: 1991 Volvo Alternator Won't Charge Battery

It turns out there was no short circuit, the resistances I was reading were just the loads of the different relays and devices. I hooked everything back up and no fuses blew. I jumpered from b+ to d+ with an in line toggle switch and 5A fuse and now the brick is back.
by 240bri
09 Oct 2014, 03:23
Forum: 240, 740, 760, 780, Bertone, 940, 960, V90, S90
Topic: 1991 Volvo Alternator Won't Charge Battery
Replies: 8
Views: 3716

Re: 1991 Volvo Alternator Won't Charge Battery

Wouldn't I have to hook the battery up to use a temperature gun? The short happened with the battery disconnected, and I'd rather not risk damaging the wires and components by letting any fault current flow. That's why I've been using an ohmmeter to trace the short.
by 240bri
08 Oct 2014, 17:45
Forum: 240, 740, 760, 780, Bertone, 940, 960, V90, S90
Topic: 1991 Volvo Alternator Won't Charge Battery
Replies: 8
Views: 3716

Re: 1991 Volvo Alternator Won't Charge Battery

Thanks Regina, sorry for the slow reply, I didn't think my post went through. I'm new here haha. I was in the process of trying that when a new problem popped up. Now I have a short circuit to ground. I reinstalled the stock alternator, and while I was doing this I disconnected the air intake to get...
by 240bri
01 Oct 2014, 11:49
Forum: 240, 740, 760, 780, Bertone, 940, 960, V90, S90
Topic: 1991 Volvo Alternator Won't Charge Battery
Replies: 8
Views: 3716

1991 Volvo Alternator Won't Charge Battery

About two months ago my 91 240 wouldn't start, so I jumped it but wouldn't hold a charge. I checked my Bentley manual, which says that the battery warning light (wired in series between the small positive alternator terminal (D+) and the battery) needs to work for the alternator to operate. Warning ...