[ugosplat]

my voltage meter is usually at 14 but when i turn the heat on it drops to almost 12. is this bad? what could it mean? i also have an underdrive pulley but it has never caused any problems

Matt

 

[ugosplat]

also this only happens at idle, when iam driving it is always at 14. when using the lights at idle it also decreases the voltage. is this normal or maybe a sign of a bad alternator?

 

[elektrobeatz]

Well mine does the same thing. I wanna know if this is normal too

 

[Steve 91R/T]

Voltage also drops a bit when the turn signals are on, but not the headlights or a/c. Not sure if there is some kind of voltage short or loose wiring. I had my alternator checked and battery tested and they said they both were operating perfectly. So must be something else.

 

[iceccool2]

That's normal. The heat requires electricity as do the turn signals. When they are on, thye eat electricity. Cars run on a 12V electric system, so running at 12V is normal.