HO Alternator problems

Oak244
10+ year member

Senior VIP Member
Well I just reread an email that had the sales pitch in it for this Alt. He said it would do 100 Amps at idle. I can tell at idle my Alternator is not working. At idle a volt meter shows I only have 12.3 Volts, and reved up it gets 14.5. Also driving home tonight I noticed that my lights dim way down at idle, then get brighter as the rpm rises. I can try bumping the idle up a little, however I remember doing this with my old Probe GT, and not matter how much I turned the screw to punch my idle up, it would only hold that for a while then drop back down. I got to the point that the screw was as far as it would go, and the idle still would not raise. Needless to say I am a little affraid of doing that to this car.

A second thought I had was this. Since the alt does not run at idle. should I hook up a battery in the trunk? This way the system would feed on that , then hopefully recharge when driving. I have never gone this far in the past as far as electrical install, so not sure even what I would need to get or do.

Last thought was, Well I was told I would get 100 amps at idle, and I do not get any, so I should just return the alt and get a different companies Alt.

What do you think?

 
Well my stock Alt is bad now, so I can not really remove this one untill I have a new one to replace it with, or I am out a car! lol

 
Well my stock Alt is bad now, so I can not really remove this one untill I have a new one to replace it with, or I am out a car! lol
alterstart put me in that same position, i had to buy a new stock alty to run for a while, funny thing is it puts out better power then when i had my HO in!

 
wow i have a bosch 120amp alt and i have the same problem

my idle volts is 14.5-14.7 and when my bass kicks in it drops to 12.71

and my dimming is retarded....i need to get a new alt and fast

80

i'm idling at 1200rpms

 
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