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Discussion Starter #1
ive searched the archives and ive seen nothing on this type of problem
when the rpms are up over 1000 it steadys out but when i come
to a stop the brake warning light goes on and a relay under the glove
box clicks and the red light comes on dim on the volt meter in the dash
i thought it was the alternator so i put on the original
hitachi and the exact same thing happens. ive cleaned the heck out of
all the terminals associated with charging that i could find. Even the lights
flicker at night because the voltage jumps so much
any ideas?
 

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Take both alternators to a good alternator repair shop and have them tested. I'm going to guess that there is perhaps a single diode popped in both. In order for the light to glow there needs to be a ground signal available through the alternator. Perhaps also possible (?) is a loose pulley on the crank damper, but not sure if that can happen without it coming off. Did you clean the connections in the 'T' shaped plug in connector on the alternator also. Also check and make sure that all chassis grounds from batt to firewall, alternator to engine and engine to batt are good. Possible leaky condensor on the alternator.
 

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Ck and make sure your fusible links are clean and tight. You might also have a bad voltage reg. I had similar problems. $14 at autozone. Make sure you get the transistorized one made by Wells.

Kevin
 

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Kevin: The voltage regulator is internal on '78.

Take them to a generic "starter/alternator" shop in your area.

ConorP
 

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I had a similar problem that turned out to be the battery connections were in need of a good cleaning. They looked ok but turned out to have a good layer of corrosion that gave the same symptoms you mentioned. I also cleaned the other ends of the cables, down at the starter. Problem solved. But you may have already have done this. Good luck. Mark
 

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Discussion Starter #6
mark78 you were right. loose battery connections
that should have been the first thing i looked for
but i figured i already had done that 6 months ago
but this ole car needs constant attention i guess

today was a beautiful day so i started my little rust fix project i
have been meaning to get to for a few months. small rust bubbles
appearing on the rocker... hmmm no biggie WRONG.
i started digging and found a layer of bondo and a hole the
size of a quarter.the bondo really holds water between layers.
i dug as much as i could out and got out the rust converter and coated it and
put a bunch of silicone sealant over the hole for a temp fix
hope i at least stopped the progression of the rust. its a california
car there is a little salt sea air and fog here.

i wonder why it rusted out in the area of the rocker
about 6" in from the rear wheelwell. there appears
to be no moisture in the floorboards. in fact the underside of the
car is beautiful.
 
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