Thread: alternator charging fluctuations

Everything you're describing is normal except it going down to 12.80 while in motion. I would guess that means you've messed it up. Get the CS144. You won't have to worry about it again.

Originally Posted by J57ltr

I'm telling you this is normal for anything past 04+ I have been driving rentals for more years than I care to discuss. I have driven an 05' just like the one I own when it had 5k on it and that one did the same thing. Exactly as the OP described. I have driven cars and watched the voltage stay at 12.5 going down the freeway for hours. I kick on the lights, rr defroster, and AC and the voltage would rise to the mid 13's come to a stop where the fans kick on and it went to 14 and change. This is normal.

If the OP wants to upgrade or make the modification then cool, but telling him there is a problem is incorrect.




Jeff

Dude i have an 04 comp G. Exactly like his car except a year earlier. Never seen it go to 12.5 while cruising. Not saying i stare at it for hours, but i'll flip through to get back to boost gauge and it looks normal.

But just so you'll believe me, I'll post a log in a day or two. Going on a trip tomorrow, about 2 hours. I'll add battery voltage to my torque log and see what happens.