Why is my Voltage so Low???? Help!

[KJLiberty 10+ year member]

for the past two weeks my voltage has been scary low. My digital distibution block reads about 8.5 with the car on or off. Absolutely horrible, I know. My amps don't even turn on whatsoever...not even into protect mode or anything. I've checked all of my wiring, ground, fuses, remote etc and everything is in place. I assume because this all had been working for a few months since I got it that my install is not the problem.

I got my alternator checked and its putting out over 14 volts as it should with my Big 3 install.

Could it be my not even 2.5 month old optima yellowtop dying on me? Im only asking ~750wrms so I find it completely unlikely.

What could possibly be my problem?

Notes:

Big 3 in Knu 0

Power + ground: Knu 0 into Dist. Block out into 4awg then amps

My remote wire is hooked up to my fuse panel and not the wire in my HU

Click to read more...

 

[gckless 5,000+ posts]

So what happened? When did it stop working and what was happening when it stopped?

 

[bhsdriller 10+ year member]

you're alternator is putting out 14+v, but it's not reaching the amps?....look for a bad connection somewhere

Maybe pull the batt and take it to a local battery shop, they can load test it and see if it's bad or not

 

[KJLiberty 10+ year member]

I was out of town and my mom decided to drive my car for those couple days. She said she didnt do anything. I believe her because she wouldnt know how to. ahahah. So to answer your question I have zero idea. But it did work halfway for like a couple hours one day then I messed around and it worked fine for 5 minutes this weekend. Im completely at a loss here.

 

[KJLiberty 10+ year member]

yeah thats what the guy at autozone said it was putting out. ill have to look over my connections again then tomorrow. ill have to try that tomorrow though. im in to trying anything that helps me narrow things down. thanks

 

[FamousMassacre 10+ year member]

Are your connections soldered? Solder can cause voltage drops... not this much though

 

[gckless 5,000+ posts]

Are your connections soldered? Solder can cause voltage drops... not this much though

Solder MAY cause voltage drops in the tenths. Not applicable in this situation.

 

[BoomBoxStereo 10+ year member]

it's been said, but check for a bad connection somewhere

 

[KJLiberty 10+ year member]

Solder MAY cause voltage drops in the tenths. Not applicable in this situation.

Are your connections soldered? Solder can cause voltage drops... not this much though

no nothing is soldered. all clamped crimped, whatever you wish to call it, into the ring terminals.

 

[Varinabassing 10+ year member]

Sounds like what everyone is thinking a bad connection. Maybe move your ground just to see if that's the problem. I have checked a ground before by taking the screw out and back in and then move it to a new location and it work fine just food for thought

 

[KJLiberty 10+ year member]

its worth a shot. im gonna try it.

 

[bgowdy 5,000+ posts]

check your distro block connections i had the same problem before. i removed my distro block from it and never had the problem again..... i now dont run blocks or fuses lol