Possible alternator problem

cahomey

E30 Fanatic

Join Date: Mar 2004

Posts: 1200
#1

Possible alternator problem

02-20-2007, 03:05 PM

Ok, this is when my motor is at idle.

When I turn on my rad fan there is a shortage of power and it makes my idle drop.

Also does this when I put my windows down at the same time.

Isn't there a regulator in the alternator that goes out or somthing?

I've tested the battery and current at idle and it's fine.

Thanks guys.

PS. I also have a stereo(4 speakers, 2 amps, 1sub)

"It's like a koala bear crapped a rainbow in my brain."
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NZM50SWAP

Member

Join Date: Feb 2006

Posts: 75
#2

02-21-2007, 12:21 AM

Mine does the same dude

Mine does the same dude but this has cause no major issues so just ignore it.
I'm running my factory aux fan on a manual switch that starts it on highspeed straight away. Apparently this is drawing about 80amps on startup so a drop in idle (power) makes perfect sense
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