Chaos07

Ok so whenever im driving i notice the volt gauge teeter around 13 and im idle it will drop near the yellow lines. Then when i accelerate it will go back up and teeter around 13.....the alt is practicaly brand new bought it back in april probably. but the battery i replaced when i first got the car back in Feb of 2010. Keep in mind the HEAT here is around 100 easy. Any Ideas what is going on?

Chaos07

anybody???

wssix99

iTrader: (5)

If the voltage goes down with RPMs, either your belt is slipping or your alternator is bad.

What happens when your A/C is off. The A/C will suck a volt or two out of the system, as well. With the A/C off, you shouldn't see any drop at all.

Chaos07

when the ac is off it will be about 13v, but at night this wont happen at all it will be a strong 13 - 14 v

wssix99

iTrader: (5)

You may not have a problem at all, but if you are really on the yellow, checking the belt and alternator is free. (It just takes some elbow grease.)

Chaos07

yeah true this morning it was cool around 11, and the needle never moved around 13v but later today around 4 it was hotter and the needle did get below 13v