Rick62
Well-Known Member
I have an '84 D100 that was originally a lean burn slant six. I converted it to a 440 more than thirty years ago. The motor was recently removed and freshened by a local engine builder. It is not charging. There is no voltage change at the battery when running. I thought I might get lucky and fix it by changing the regulator, no luck. What confuses me is the amp gauge doesn't move. It stays neutral. Turning the headlights on with the engine running or not doesn't move the amp gauge. This symptom makes me think the alternator may not be the problem. The battery was recently replaced. I don't drive the truck much so I don't know when the problem started. Can anyone here suggest where I should look next? Thanks!!