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Alternator going bad?


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Posted

Hey guys i have a question. When i turned my car on today my brake light came on along with the battery light. I put a DMM on the battery at rest and it was reading normal around 13, but when i started the car up the voltage started to climb and it was surging past 18v so i shut it down. Is it time for a new alt?

(2)12" Rockford Fosgate P3's

(1)AudioQue 1200D

(1)AudioQue 4x90

6.5" Infinity Kappa Components

(2)6" Elemental Design e3.6's

6x9 Infinity Kappa Coax

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Posted

wow thats not good. were you checkn it with dmm when it did that? or just going off of dash gauge? the brake light coming on at the same time is weird almost sounds like a dash short and gauges are acting up. but if you got 18v with the dmm then the voltage regulator sounds like its bad

TEAM DC AUDIO

VEHICLE:98 chevy tahoe 2wd 3-4 drop

HEADUNIT:alpine 9886

PREAMP:arcaudio

FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door

KICKPANELS:jl audio 5 1/4

REAR DOORS: dd components 6 1/2s

HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors

SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV

SUB AMP: 2-dc7.5s

ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket

WIRE:10-runs 0g front to back

BATTERIES:6-d1400s

TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5.

Posted

Hey sorry for not getting back soon enough, nut everything was tested on DMM, and the alt was stock. I took it to a shop and they said it was the regulator. So now its time for a new alternator.

(2)12" Rockford Fosgate P3's

(1)AudioQue 1200D

(1)AudioQue 4x90

6.5" Infinity Kappa Components

(2)6" Elemental Design e3.6's

6x9 Infinity Kappa Coax

JVC Arsenal H/U

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