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Hey guys,

Well after hearing a strange squeeling noise under my hood, I think I am hitting my alternator too hard. Can anyone recommend what high output alternator would be good for this setup?

(2) - 800 Watt Fosgate Amps (I think)

(2) - 10" JL Audio Subs

Underbody Neon Kit (StreetGlow Gold Series)

(2) sets of mini strobs (front and rear of car)

Colored fog lights in front

(5) Assorted Neons in car (2 - 5", 1 - 10", 2 - 9")

Reverse indiglo guage faces

(3) 2 1/4 AC mini guages (reverse indiglo)

**Anyway, I noticed that after awhile with all these additions, when I am sitting idle up to about 1.5k RPM's, there is this whining sound coming from under the hood. IF I turn my steering wheel it goes away. Or if I rev the engine or start moving (obviously producing more RPM's) From the searches I have done it sounds like the alternator can't take it. Anyone got a good replacement in mind for what I am running?

BTW even with everything on, and my stereo bumping as hard as it can, the lights will not even flicker a little. Also all my neons are on switches, so they are only on when I toggle them . Same with the strobes.

 
Rep Power: 311

Sounds like its related to your power steering pump or belt if the noise goes away when turning. A quick test is to disconnect your amps and listen to see it disappears. Also maybe think about installing a voltmeter.

 
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A alternator under a heavy power load will make noise similair to a power steering pump. If you draw heavy amperage from the alternator the regualator is wide open and the internal field and windings are going as hard as possible.

If I were you I'd take my car to a good Starter/Alternator shop and have them to a amp draw test on your car. Basically you turn everything on in your car and the shop will detemind if you need a beefed up alternator. If you do nned to get a upgraded one, get ready to put out some serious $$$$$$. I've seen some peole spend upwards of $700 to $900.