83Stang5.0

Ok well I made the mistake of getting the most expensive battery I could find for the sake of not needing a battery for awhile.....A Lightweight 16V.

Anyways it was for my Mustang, so after I got the custom posts worked out, she was ready to go.

I'll give some info about the car real quick, its an 83 LX, original V6 car, carbed 302 now.


I have an electric fuel pump with a switch in the car, which is powered from an external distribution block coming from the battery.

Also had just put a new alternator on cause I needed one, anyways on to the problems.

Well with the 16v battery in, my aftermarket voltmeter was reading about 16-17(battery was at 16.63V when I picked it up).

When I started it, it started right up, I mean, so fast and easy you'd think it was a brand new motor or something. Lettin her warm up, giving a little gas, volts were peakin on my guage(Only goes to 18).

Now at this point I knew that prob wasn't good, but was determined to drive as is til something broke.


Anyways skip some BS, I'm out for a drive the next night, after having shut the car off somewhere else even, car won't start. Just buzzing and clicking.

Checked the volts, car still plenty of juice. We jumped the solenoid and still wasn't turnin over, so I replaced the solenoid.

Next mornin tryin to get my car home, I noticed the fuel filter under the hood isn't filling, I slide under the back and see my fuel pump pissin everywhere.

I guess a seal went from the extra juice cause she was screamin!



Sooooo, I have a new fuel pump and solenoid, and my battery wont hold a charge. I'm pretty sure theres not a feasible way for me to have killed the battery, so I'm assuming something is stuck and draining my battery. 14V @ night, 0 by morning

Also I think I may still have the buzzing issue when I go to start it, only tried to turn it one time at low volts so not sure.

Anyone got any ideas or maybe had this kind of issue before?

I would also trade this battery for a regular top post of decent quality, the battery I have retails for a good bit, but obv I can't use it appropriately.

reborncx

let's think about this for a second... you put a battery with 4 more volts in a car ment only for 12, 14.5 max with the motor running and the alt charging. now just thank god you didn't do that in a car with a computer controlled ANYTHING. remember voltage isn't the only thing that changes there is also amperage which prob fried your starter, def the solenoid a second time, good chance the alternator and regulator and possibly anything else that may have wires running to them.

now if you are having problems with batteries lasting in the first place you should be looking for that issue not putting a bigger battery in it to try and make it last. besides car batteries generally only last 3-6 years anyways. do you have an amp for a stereo in the car?

put the stock battery back in and hope for the best. anything that doesn't work at that point is fried. check your fuses (all of them for anything not working) and the switch for your fuel pump. if the amperage was too high it could have burned it up.

"its not the voltage that will kill a person its the amperage."

and where did you find a pre 94 mustang with a factory v6? i've never heard of that and i've owned several including an 86 SVO (2.3L Turbo fairly rare). From 79- 93 as far as i knew you could get a stang with either a natural aspirated 2.3L or the good ole 5.0L, unless it was a special car like the SVO's, cobra's, saleen's ... etc.

83Stang5.0

Well apparently I didn't have an issue with starting, as I charged the battery and she turned over.

Anyways car is fixed so, and yeah the car was original V6 with stickers and the vin comes back as V6. T-tops too.

I had about 3-5 batteries go dead randomly on me within a period of about a year - year and a 1/2. When my last one died, and I got a deal on the beast I have now, I figured it was for the better.

reborncx

i'll just about bet on the fact that you have a ground issue and thats what causing the batteries to go dead

83Stang5.0

different batteries in different cars, I just have bad luck

Fabrik8

Problems notwithstanding, you can't charge a 16V battery to 16V with a 12V electrical system.

83Stang5.0

You can't charge it in a car? When I was moving, my voltmeter was peaked at 20 with the alternator pushin. meter goes right to the battery

00civichatch

something is wrong with your alternator , or its over driven by the belt. is it a moddified alternator made to pump 16v?

reborncx

i'm thinking the voltage regulator fucked up and thats why it tacked the guage at 20volts. it was just letting the alternator run wide open.

83Stang5.0

no it was a normal, brand new alternator.

The guage went straight to the battery, not inline with the regulator. It didn't always stay peaked on the guage, when I was idling it would dip back toward 16. Under load it peaked.

Car is gone now though.