M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Electrical => Topic started by: Uniquestrain on May 06, 2013, 09:25:29 PM

Title: Alternator issue
Post by: Uniquestrain on May 06, 2013, 09:25:29 PM

Does anyone know why my alternator isnt switching on to charge my battery? Everything is plugged in right
New alternator too
Im suspecting a bad ecu or wiring

Title: Re: Alternator issue
Post by: DesktopDave on May 08, 2013, 07:04:17 AM

I'll have to look up the wiring diagrams, but IIRC that's a pretty simple system.  Check the grounds, wires and have the battery load tested.  Then check the regulator.  Most auto shops will run a free test of both the battery and alternator.