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Old 02-14-2010, 12:35 AM   #1
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Angry Electrical Drian When Driving

Hello All,

I recently replaced the alternator in my 94 3.8 SSEI Supercharged Bon.(loaded) after the Volt light started comming on. Took the old one out (5 min. job) had it tested at a local parts store,- was bad and so I replaced it with a new delco. Tonight I was driving home and noticed all of a sudden all of the lights, inside, outside, dash, blower would dim or slowdown like a power serge or drain for a couple of seconds but no warning lights. It did this twice on the way home, parked it in the garage but it wont do it parked idling. I had the main PCM replaced last May by a GM dealer and they did test wiring, grownds, ignition.. things like that and found no problems there. The battery is new about 3 months old (diehard). So I'm looking for some advice as to were I should start looking first, I'm thinking fuses first but I'm not sure its been a good car up untill the the last year but what do you expect I've owned it for 15 years. Thanks...
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Old 02-14-2010, 12:39 AM   #2
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Check the battery wires and clean up the connections on both ends. See if that helps out. Check for corrosion inside the cable boots as well.
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Old 02-14-2010, 12:43 AM   #3
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Sorry, check them first no corrosion, that was done when I changed the battery so I'm good there.
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Old 02-14-2010, 12:46 AM   #4
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Old 02-14-2010, 12:51 AM   #5
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Thanks I'll check them out in the morning.
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Old 02-17-2010, 04:22 PM   #6
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Hello again,

Got to checking grounds, cleaded some, Ohm'ed wires, checked fuses, bulbs but have not found any problems so far. I don't have ground busses in the floor pan, its a seperate ground wire on bothe sides that ground to a bolt under the dash and those were good to. But when I was testing plug wires there are 3 metal caps I guess you would call them on the boots at the plug on the three plugs closest to the fire wall, I put them back on cuz I changed the plugs and wires the same time I replaced the battery cuz I didn't know why they were there to begin with. So are they there for a reason or can I take them off to eliminate them from the problem. Thanks in advanced.
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