PLEASE HELP!!! I can NOT figure out what this noise is...

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TeaSpoon

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It happened after you installed a light bar? Is it an above the cab light bar? I’ve heard similar wind howling sounds at acceleration with above the cab bars and cargo racks where the air has to route between the rack and the cab


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Doubeleive

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well it's clear as day in your photo's that there is 0 gauge wire connected directly to the alternator, I think you are missing the point of "disconnect any wires to alternator" and then take it for a run. just offering a suggestion to resolve your problem.
 

Doubeleive

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It happened after you installed a light bar? Is it an above the cab light bar? I’ve heard similar wind howling sounds at acceleration with above the cab bars and cargo racks where the air has to route between the rack and the cab


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I put a bug guard on mine once and driving down the road you would swear it was raining like cats and dogs, it was the weirdest thing I ever had happen.
 

TeaSpoon

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I put a bug guard on mine once and driving down the road you would swear it was raining like cats and dogs, it was the weirdest thing I ever had happen.
Yeah me too, made my mirrors rattle and whistled something terrible until I put a different one on it.


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xFuZzYx

xFuZzYx

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well it's clear as day in your photo's that there is 0 gauge wire connected directly to the alternator, I think you are missing the point of "disconnect any wires to alternator" and then take it for a run. just offering a suggestion to resolve your problem.

I didn't mean to come off like a dick, my bad, I greatly appreciate the fact that you are offering a suggestion and trying to help me out here, but I was just explaining why that wouldn't be possible to try...

It's a self exciting alternator, meaning it doesn't rely on a signal to tell it when to work or when to not work, so if it's spinning, it's automatically charging. So a positive wire HAS to be attached to it so the power it's producing can go somewhere or else it will burn itself up almost instantly...
 
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xFuZzYx

xFuZzYx

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It happened after you installed a light bar? Is it an above the cab light bar? I’ve heard similar wind howling sounds at acceleration with above the cab bars and cargo racks where the air has to route between the rack and the cab


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I do also get some wind noise from my lightbar but that's not what I'm dealing with here. If it was only wind noise, then it would be constant the entire time I'm moving, but this noise will go away while I'm still going 40+ if I let off the gas pedal...
 

Rocket Man

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Pull the light bar just to eliminate it. Replace that alt with a stocker from a junkyard so the belt will still work to eliminate the alt. Or keep guessing about those two. I'm betting on the alt.
 

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