Overcharging Alternator

[SCR34M3R]

hay guys

i will start from the beginning, i put a stereo in my car (R34 sedan) over the weekend, and when i was tuning it i didnt start the car, which ended in a flat battery, so we push started it. battery is fully charged again but when car is running it shows 15.8volts which i was told the alternator is overcharging.

has ne one got ne ideas how to fix this? or do i just buy a new alternator?

Cheers

Edited November 12, 2006 by Raistlin

[Race_Bred]

you'll have to pull it out and give it to an auto electrician to be repaired or recoed or replaced, either way its gotta come out

[grim32]

hay guys

i will start from the beginning, i put a stereo in my car (R34 sedan) over the weekend, and when i was tuning it i didnt start the car, which ended in a flat battery, so we push started it. battery is fully charged again but when car is running it shows 15.8volts which i was told the alternator is overcharging.

has ne one got ne ideas how to fix this? or do i just buy a new alternator?

Cheers

First i would try turning off all the stereo, amps etc etc and see if it charges at the correct rate, 14.1 when cold and about 13.6 volts when warm.

The reason i say this is because you may have tapped into the voltage sence wire somehow so the alternator thinks the battery is low on voltage and will throw out a higher rate of charge.

[SCR34M3R]

First i would try turning off all the stereo, amps etc etc and see if it charges at the correct rate, 14.1 when cold and about 13.6 volts when warm.

The reason i say this is because you may have tapped into the voltage sence wire somehow so the alternator thinks the battery is low on voltage and will throw out a higher rate of charge.

just tryed that didnt change but it is sitting at about 15.48-9volts with battery light on all the time

[grim32]

just tryed that didnt change but it is sitting at about 15.48-9volts with battery light on all the time

Try unplug the the 2 pin plug on the alternator and see what happens

[700HP-GTR33]

I have seen batteries explode...get it fixed by an auto elec.

[blur]

ive seen every bulb blown, ecus, clocks, stereos the whole lot fried from overcharging, get it fixed ASAP, DONT DRIVE IT !!!!!!!!!

[d00dz]

It seems that on my PFC the battery volt is approx between 14.8-15.3.

I havent had any problems with the car's electrics or anything.

Would this be an issue? Alternator? Battery?

Also it seems as though when I turn on my headlights the voltage drops approx 0.5-0.9volts. Hmmmz..

[700HP-GTR33]

I have seen batteries explode...get it fixed by an auto elec.

As in explode in the engine bay .

Take it serious if you don't want things to melt ...stop messing with it and get an auto elec....please,

your killing me.

[tridentt150v]

Get your battery checked, if it has a faulty cell you will have an open circuit. The alternator thinks it is charging a flat battery so max's the voltage.

BTW your battery will not hold a good charge if this is the case.

[SCR34M3R]

i got a new battery which it was stuffed, but still same thing is at about 15.4volt so taking it to auto elec when i get home