voltage not stable?

[sXi]

Hi, I've noticed this. my run idles normal. but when I use any of the electronics on the car. the rpm needle drops about 150 - 200 rmp. for example, when I use the power window, the needle drops until I release the window switch, it will go back to normal.

why is that? or is it completely normal act?

thanks

[:: orion ::]

Is there any oil in your coolant?

Any knocking when the RPMs jump around like that?

Have you ever overheated or run the motor without oil?

How much woodk could a woodchuck...

...

j/k...

It's completely normal.

More load on the eletrical system makes the alternator work harder to produce voltage/amps...so the idle suffers a little. The A/C compresosr will do the same thing, excpet it has a backup idle control motor to help smooth it back out.

- Brian