Originally Posted by
r5matt
Today I went and got a brand spanking new battery, smashed it on jump started it up 1hours driving, turned it off and DEAD! What I did notice is now, every so often the battery light comes on when booting it!, it's very faint tho!. Any way the shop tested the battery and again readings were erratic AGAIN14's then into 20's. Help.... This is madness
Then it sounds like you regulator/brush pack on your alternator has gone/going. So it's not charging properly, so either repair alternator or replace, but you need to test it properly first.
Get your self a tester and start car put it to 20v and put it on terminals and see what it's doing, should be a constant 13-14v. Turn all lights everything on.
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