ok when driving at speed my battery gauge is fine but when i come to a stop the level on the gauge drops and the lights dim. i do have an aftermarket system 650 rms amp... but i have had it for almost 3 years now and its never done this
2007-12-01 13:29:31 · 7 answers · asked by steven d 1 in Cars & Transportation ➔ Maintenance & Repairs
what year of car...check belts first.it could be voltage regulater on older car..when car is running if you take off positive battery cable without stereo wipers etc.it should stay running with a good alternater..when running the rear of alternater should be magnetized..those are just my pre 90's backyard hillbilly fixes for Chevy's...you might have to go back to the factory am/fm without beefing up your electrical
2007-12-01 13:53:50 · answer #1 · answered by de4dog 2 · 1⤊ 0⤋
Get yourself a battery load tester . If it saves you one battery or one alternator, it'd be worth it. It's one of the best investments I've made. I linked one below. Borrow one if you have to, get it done at a shop even. It will tell you the state of your charging system, battery and alternator, all in about a minute.
My 4.3 Chevy does that same thing when I have my heater on high. At an idle, it can't keep up to the demand. I have too much draw on the system.
2007-12-01 21:43:46 · answer #2 · answered by xmozzazx 1 · 0⤊ 0⤋
Have you ever had the to jump start the car at any time. If you have and the other car is running when you connect to 2 together this may or may not damage your diodes inside of your alternator. But it really sounds like you need to tighten your alternator belt.
2007-12-01 21:36:52 · answer #3 · answered by Big Deal Maker 7 · 0⤊ 0⤋
its sounds like when you are driving high or mid throttle like on the high way or whatever
that the alternator is doing its job
and when you come to a stop its not
make sure that your connections are good and make sure your belt and belt tensioner are within spec
it sounds like your engine/alternator is having to work harder to charge your battery
like i said just check your belt and connections
2007-12-01 22:08:59 · answer #4 · answered by alex 1 · 0⤊ 0⤋
COULD BE BOTH IF YOUR ALTERNATOR HAS GONE BAD ITS DRAINING YOUR BATTERY TO THE POINT IT MIGHT NOT RECHARGE, OR COULD BE A GROUNDED WIRE, IDE GO TO YOUR LOCAL AUTO STORE THEY CAN CHECK ALL THAT FOR YOU, NO CHARGE
2007-12-01 23:05:26 · answer #5 · answered by vanessaskiss 2 · 0⤊ 0⤋
would recommend your local auto parts store they will usually
test battery and starting/charging system for free. find out what's wrong before spending money.
2007-12-01 21:38:15 · answer #6 · answered by msgtpepper 3 · 0⤊ 2⤋
most definitely the alternator.
2007-12-01 21:54:04 · answer #7 · answered by nunmorenegative72 3 · 0⤊ 0⤋