Meen95z

iTrader: (26)

I was looking for some help and thought you guys could help some.. I got a 95' Trans Am and the voltage when I start the car after sitting is about 12.5 volts, but as it runs drops to 11.0-11.2 and stays there according to my scanmaster. The gauge reads right on the yellow mark. I have 4 gauge ran from my battery to alternator, battery to starter, battery to distribution block for pos+ and 4 gauge for the gnd-.. I have a msd box, electric waterpump, 2 gauges, underdrive pulley with overdrive on alternator, stereo system all 4 gauge and capacitor.. Reguardless of the stereo being on or off it still discharges, no matter what rpm it never picks back up.. I have also tried 3 different alternators I have for my car, all do the same.. Any suggestions?

Brian2006

iTrader: (42)

I have the EXACT same issue. Except at startup, I hover around 13.5 volts and it drops to the 12.5ish and eventually dips into the 11s if i drive it enough.

Did you try upgrading your ground wires? That's the next thing I'm about to try.

Vicinity

iTrader: (7)

That's the opposite of my problem, lol. My alt is overcharging my battery. Have you tried a new battery for the hell of it?

Meen95z

iTrader: (26)

well found out some new info, I have 14 volts at the battery and 11.6-11.8 in the car.. Some where im losing voltage..

Brian2006

iTrader: (42)

Dido. Same here. Did you check it at the altenator?

Meen95z

iTrader: (26)

yep, its fine also.. I dont know where to look for the problem now..

Brian2006

iTrader: (42)

Figured out the problem? I'm about to do the Big 3 to see if that helps on my end