Join Date: Jan 2002
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Re: alternater actin stupid...again
some basic rules for jump starting - dont ever let the 2 vehicles touch, dont go battery to battery with the ground, dont just hook up & crank - give it time to charge the dead battery a bit.
if you disconnected the battery cable with the engine running, and played with the revs at all, you can pretty much count on the GM being dead - rectifier, and regulator both.. the battery provides a load buffer for the alternator - disconnect it, and it'll give you max volts with minimum amps, frying the electronics instantly. (believe it or not, with no load they'll hit several hundred volts) Driving your rig withthe alt fried will kill the battery, even if it IS providing current, as it will over-charge, and boil the battery dry. You can also fry gauges, senders, bulbs, etc.
time for a rebuild kit, or a replacement alt.