voltage drop!

[amartin_72]

Run a ground wire front to back , 4 gauge at least.

 

[jusBloud 10+ year member]

Run a ground wire front to back , 4 gauge at least.

i thought about this but with 0 guage. about how much would it bring it up?

 

[atlninja82 10+ year member]

im having the same problem with my 93 chevy. let me know if you get it figured out

 

[SPL Blazer 10+ year member]

Run a ground wire front to back , 4 gauge at least.

Thats not going to help you. If you have a good ground at the front Battery and a good ground in the rear then that should take care of it. If you wanna go an spend the money on another run of 0 ga wire to run as a ground then by all means, go for it, but it's not going to help you. I added a run of 0/1 ga from my front batt to my rear batt and it made no difference on daily, I did see a slight db gain, but thats not what your looking for.

 

[on1wheel01 10+ year member]

maybe get more batts? +1 on checking grounds

 

[gtbike900 10+ year member]

need a better alt pm me if you want a high output alt i feel bad the lowest voltage i see at the amp full tilt at 3600 clamped rms is 13.2

 

[gtbike900 10+ year member]

about be 16v today

 

[jusBloud 10+ year member]

need a better alt pm me if you want a high output alt i feel bad the lowest voltage i see at the amp full tilt at 3600 clamped rms is 13.2

pmed

 

[gtbike900 10+ year member]

your inbox is full i need to know what year make and motor to quote you a price

 

[NhustlaR 10+ year member]

definitely user error. I put a bluetop in a civic (stock batt up front) with a 90amp alt w. big three and am running a aq2200 without it dropping below 13 at full tilt(amp was clamped @ 2095watts @ 50hz). Something must be wrong in the install.

 

[Effidasus 10+ year member]

My Jimmys voltage gauge will drop from just over 14 to about 1/4 of the way from the bottom and bounce when I am in reverse with nothing on except the DRLs. When this happens all my lights dim but I dont have any loss of power. When i accelerate the gauge returns to about 14. When Im stopped at a light the gauge drops again and bounces. Its worse when I have the rear defroster on or the vents on 4. It only seems to drop at low RPM.

I replaced the battery about 2 months ago and the alternator about 6-9 months ago.

I checked the grounds batt to engine, engine to chassis, chassis to batt and all of them were fine. Does anyone know what could be causing this to happen?

 

[on1wheel01 10+ year member]

yes your problem lies from you jacking someones threqd make ur own for best results

 

[SicAudio 5,000+ posts]

if you are relying on your factory guage thats the 1st problem they are not accurate to begin with my chevy guage sits at 11 volts on full tilt but at the amp i have 13.8 test at the amp not the guage! if that still shows a drop u fvcked up sumwhere or the batt/alt is shitt

 

[tinmanchris217 10+ year member]

I've experienced this too. Not sure the exact cause...

1) Do your headlights dim too? Or is it just the interior and gauges?

2) Is your amp ground connected closely to your frame rails, or is does it go through any thin paneling?

 

[VIP3R 10+ year member]

one thing to note, are you testing this at idle?

Alternators only put out so many amps at idle vs at a certain rpm.