LS1TECH - Camaro and Firebird Forum Discussion

What causes this?

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Old Aug 12, 2008 | 01:06 PM
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Default What causes this?
Normally this issue doesnt annoy me but today i have just about had it. Why are all the lights on my car pulsating? I've heard others in the past say theirs did it too but nobody ever said why. Is it an alternator issue? Maybe battery? Can anyone help?
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Old Aug 12, 2008 | 01:21 PM
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test the voltage regulator
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Old Aug 12, 2008 | 01:32 PM
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hey crystal what does your gauge read . im having the samething and my battery is new so maybe alternater. mine has read low since ive had it but always works, so i havent replaced. its been 5 -6 years now
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Old Aug 12, 2008 | 01:41 PM
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well it reads a little high but i noticed the gage pulsates too.
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Old Aug 12, 2008 | 01:43 PM
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Well your lights will pulsate if you have a big system in the car with out a capacitor regulating it.
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Old Aug 12, 2008 | 01:45 PM
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Well looks like i have a few things to look at then. I do have a system but i really know nothing about it other then it came with the car when i bought it lol.
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Old Aug 12, 2008 | 01:50 PM
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if it does it when the bass hits, you need a cap for your system, do the lights dim when the system hits hard?
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Old Aug 12, 2008 | 01:51 PM
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no it does it constantly
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Old Aug 12, 2008 | 02:40 PM
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Mine did this and the alternator tested good.

I finally bit the bullet and replaced that alternator and it quit.
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Old Aug 12, 2008 | 02:43 PM
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Originally Posted by Greed4Speed
Mine did this and the alternator tested good.

I finally bit the bullet and replaced that alternator and it quit.
Really.....hmmmmmmmmmm
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Old Aug 12, 2008 | 02:46 PM
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Yeah ive learned the hard way that just cause the alternator tests good doesnt always mean that it is.
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Old Aug 12, 2008 | 02:46 PM
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Originally Posted by Greed4Speed
Mine did this and the alternator tested good.

I finally bit the bullet and replaced that alternator and it quit.
x2 my friend's v6 did the same..i told him to just get a new alternator..problem fixed
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Old Aug 12, 2008 | 02:47 PM
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oops sorry this isnt in my region sorry guys
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Old Aug 12, 2008 | 03:09 PM
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mine has done that before in my Firehawk. Its the voltage regulator, and since its inside the alternator, the alternator will test as good.
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Old Aug 12, 2008 | 03:10 PM
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Thanx for all the help guys, looks like i will be replacing it this weekend. If that doesnt fix it then next will be the system haha
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Old Aug 12, 2008 | 03:13 PM
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lol you dont need a system only the roar of the motor, besides thats just added weight
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Old Aug 12, 2008 | 03:22 PM
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If you even think it is the system, just unhook the power leads to your amps from what ever power source you tapped. If it still does it then you know it isn't the system.
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Old Aug 12, 2008 | 03:25 PM
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Thats the thing even if it is the system, the whole thing needs to be rewired because whoever installed it did the worse job i have seen haha its a bit of a mess of wires
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Old Aug 12, 2008 | 05:58 PM
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Whatever you do Crystal........... DON'T GO WITH AUTOZONE ALTERNATOR! (Replaced mine 6 or 7 times before switching to O'Reiley's, problem solved. Doesn't matter if our situation/problem was different, I lost and you will too with that brand. I did a thread on this and I think about 6 different people agreed with me and maybe 2 didn't have problems.
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Old Aug 12, 2008 | 06:01 PM
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It's the Fagometer. It's pulsating because it has detected a *** has been in your car. Your bf Rob must have sat in it recently.
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