critter

Is it the battery or the alternator or is there a voltage reg somewhere?



Drove the car to work this morning and it was fine.



I have noticed that when I use the head lights and the Air conditioning blower that the voltage will drop below 12. No charge light has ever come on. This low voltage under load has been going on for a while.



When I went to leave work, my battery voltage was way down and the car won't start. Got a jump and it started up like a champ but voltage stayed down around 10 volts. When I hit the break pedal the voltage went below 8 and the car died.



Thanks for a word...Critter

Rotaryman88

That's ur alternator...i should still have my s4 alternator w/ dual alt pulley laying around...if ur interested, PM me....

vosko

it could be the battery also

j9fd3s

it could also be the cables



mike

Rotaryman88

Well...the reason i say alternator is cause thats what my buddy's rx did...the volt gauge would always read 12 or below when you turned the headlights on, etc...

rx7machine

As long as it's fixable.

amp

check your grounds...

critter

FYI --- This did turn out to be the alternator. Changed it today and the voltage stays above 12 even with the lights, a/c blower, radio, and wipers on. Thanks for the words.....

needa86NAat

Try adding a min 8 gauge wire from alt to + on batt. I got 1.5 amps on the gauge just by doing this.... also no drop from headlights/ defroster!!

Rob x-7

I was going to tell you to disconnect the postitive battery cable while the car is running and see if the alternator is putting out enough to keep the car running or not.