total battery drain????
 

I bought a 92 z28 and swapped out the 305 for a 350 L98 out of a 91 iroc. now when i run the car it drains the battery out whenever i hit the turn signals or any of the lights. it drains it so low that the car starts running rough and shuts off. i know the alternator is good. im not an electrical guy, if anybody knows about this please let me know what i should do. thanx

Re: total battery drain????
 

Ahh! Same problem im having, minus the swap. Still orginal 305 in a 91. new alternator and battery. Drains all the way out with any addition electronics activated (turn signal, fan((toggle switch)), radio..etc)

Please someone help because today i actually took it to a...friend who is sum what of an electrical genius. yea...aparently hes not that smart because my car didnt make it back to my house. :doh:

Re: total battery drain????
 

Maybe a short allowing the current to drain to the body?

All Alts Work Good Over 150 MPH
 

Re: All Alts Work Good Over 150 MPH
 

My car will drain will driving, the volt meter just slowly drops. If you flip on the blinkers it will drop a volt untill it is flipped back off. I know this isnt the problem, but its just an example to show that my car isn't charging or holding a charge like it should.

Re: All Alts Work Good Over 150 MPH
 

Have you had the alt tested? Just because its new, doesnt mean it cant be bad.

Re: All Alts Work Good Over 150 MPH
 

i just checked my alt again yesterday and found out that i had forgot 2 run a hot wire to the alt. duhhh. after i ran that wire it worked like a champ. 12v with the car off and about 15v when its running which is supposedly normal. thanks for the replies guys

Re: All Alts Work Good Over 150 MPH
 

I have an 87 Iroc and have had the same problem for years now....I think the only way i may solve this is to buy a 140 amp alternator. I hear FAST makes one for your vehicle...I have a brand new Optima battery and good grounds...So i am also confused myself..SOrry i couldnt be of more help.