Battery/Alternator light headache!
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 333
Likes: 1
From: utah
02 c32 99 superduty
Battery/Alternator light headache!
Ok for the last few weeks I have been running into a Battery/Alternator light problem. The light would only come on at high RPM's then go back off. So without thinking that the tensioner may be getting weak and letting the belt slip I throw an alternator on it, Well I didn't get a alternator light for about 10 minutes after the install and then bam it comes on again around 5k RPM. So I visit my old workplace and get the battery and alternator checked, The battery checks out fine and the alternator is putting out close to 14 volts at idle, Then as I rev it up it drops to 12 volts and the batt/alt light comes back on. So I am thinking I have a weak tensioner causing the belt to slip and kick the light on. So I order a new tensioner and replace it and take it for a spin and sure s@#t it comes back on at high RPM. I am at a loss here guys my serpentine belt, Battery, Alternator and tensioner are all new. If anyone has had an experience with this or can point me in the right direction I would appreciate the hell out of it!
Last edited by c3232c; Jun 20, 2009 at 03:50 PM.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 5,034
Likes: 6
From: Corona, CA
03 g35 coupe...........02 c32 Sold
if your absolutely convinced its from lack of tension, you can do your own belt wrap kit for $25. Should give you a little more boost and increase tension on the belt.
http://www.crossfireforum.org/forum/...than-25-a.html
http://www.crossfireforum.org/forum/...than-25-a.html
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 333
Likes: 1
From: utah
02 c32 99 superduty
if your absolutely convinced its from lack of tension, you can do your own belt wrap kit for $25. Should give you a little more boost and increase tension on the belt.
http://www.crossfireforum.org/forum/...than-25-a.html
http://www.crossfireforum.org/forum/...than-25-a.html
