Service Charging System
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
My car is doing it more and more, even while driving. I have stock wires. I heard in another thread that my battery is getting weak, which it might be since my 02 battery was replaced in 05 and my car just turned three. I have run it out in an hour listening to the radio working in it.
Anyone else have a weak battery cause this?
Anyone else have a weak battery cause this?
Last edited by Joe_G; May 3, 2008 at 09:56 PM.
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
A lumpy cam.....
My car is doing it more and more, even while driving. I have stock wires. I heard in another thread that my battery is getting weak, which it might be since my 02 battery was replaced in 05 and my car just turned three. I have run it out in an hour listening to the radio working in it.
Anyone else have a weak battery cause this?
Anyone else have a weak battery cause this?
Additionally, I have seen more than once that when the 06/07 and later alternators are revved to about 7 grand, something in the alternator goes wrong and either shorts the diode or kills the alternator all together. Possibly having over revved the alternator could be causing the problem at idle as well....
Sad thing is, you can't "see" problems with electronics till they die usually.....
My first guess is the tuning of the idle. Changing the alternator is not likely going to help.
The combination of erratic idle and 25% underdrive pulley looks like the problem.
Chuck CoW
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
I just changed to the MSD wires and magically am now getting this code. Will look to shield wire closest to alternator and see if it resolves.
Thanks for the good info in this post. Aftermarket wire is def to blame for this code.
