Adding a batt? Maybe? Too high voltage?!

[nick_19 1]

Hey all. I have a Saz2500D and an excessive amperage 225 amp alt. Big 3. Autocrat gold batt up front. Anyways, my voltage runs off all over the place (it will drop down 2 volts and sometimes spike up to 16V!!!). Sometimes those spikes will even cause my radio to turn off for a second. Do you think adding a yellowtop or something similar in the back near the sub amp will help voltage drop and these irregularities? Resting voltage is 14.9V. Maximum drops are high 12's. Thanks

[ssh 924]

Sounds like the voltage regulator is bad. It shouldn't spike up to 16v.

[bassahaulic 155]

You should fix it soon, spiking that high can fry your ECU.

[SMpaintball78 58]

well u sound like you know what your doing but do u have a inline fuse between ur alt. and battery up front? if so than i would check out what stefan said above "Sounds like the voltage regulator is bad. It shouldn't spike up to 16v"

[jonbearsmt 919]

bad VR for sure... and no adding a cell would not help.....

fix that problem... ASAP or you will be sad soon

[shizzzon 461]

if it's reading 16v at the battery, then the fuse is in tact...

Also, with the car off, does the voltage continue to climb at the battery above 13.6v? and keep rising?

[nick_19 1]

Ok no fuse between the alt and batt. Its about a 1.5 ft run of 0 guage. Would that help? See the spikes only happen when I have the bass turned up very loud and there is a lot of current drop. My car has no voltage regulator. It's controlled by the PCM (ECU). Resting voltage is fine. My friends' vehicle with a 300A alt does the same thing with extreme current draw. With car off, batt rests at normal voltage. Below 13V. I figured an extra batt would smooth out the current demands on the alt.

[shizzzon 461]

u need to talk with DC Power about it..

[nick_19 1]

Does this not happen to anyone else? Darn how strange... Do you think it's how the EA alts react to current demand?

[shizzzon 461]

we dont know.. u need to talk to DC Power..

[nick_19 1]

Oops.

Edited March 19, 2011 by nick_19

[djjdnap 78]

I have one i've had since about 05, never had a problem, never goes over 14.4v

have had up to 4batts with it.