When the car warm up it has low volts. And the alternator sounds like its working too hard. Its a 305 TBI.A/C,no extra radio stuff just factory. I replaced the alt with one from autozone a year ao, but it never really worked that good. I wantto get a bigger alt cause i'm planning on putting in a nie stereo system. What kind of alt do you guys recommend?

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'89 Chevy Camaro
305 TBI
COMPLETELY stock

Sounds like you have a high resistance connection somewhere...fix that first and then look into an Iceberg rebuild kit from Summit or a new 140A alternator.

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, MSD coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley module, ported plenum,
Ported Daytona Yellow stock base, Moroso valve covers, other stuff,
Streetdampr, Ruger P95DC, hot wife, new oil filter, !cats, !TBC, !AIR.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

Where should I start to look fo the connection?

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'89 Chevy Camaro
305 TBI
COMPLETELY stock

I had the same problem with a cheap rebuilt alternator. My lights would flare off idle..

I got a Duralast Gold and the problem went away.