In effort to determine why battery did not charge during 15 mi drive at 75
mph yesterday, I just measured voltage at bat with engine at 3K rpm - twice:
V = 14.2 @ 3K rpm.
Just ordered V reg. from Q2, anyway.
Wilton
----- Original Message -----
From: "WILTON" <wilt...@nc.rr.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Thursday, May 16, 2013 10:01 AM
Subject: Re: [MBZ] '91 350SDL charging?
Bat voltage after sitting overnight = 12.46v; engine started easily with
just a touch of starter; voltage at bat dropped to about 11.5 for an
instant during start; voltage at bat = 13.92 at idle.
'Didn't measure v with engine revved; wonder if it'll drop as engine is
revved, possibly causing brushes to "float." I hafta try that.
Wilton
----- Original Message -----
From: "Peter Frederick" <psf...@earthlink.net>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, May 15, 2013 6:14 PM
Subject: Re: [MBZ] '91 350SDL charging?
Get to somewhere and have the starter draw checked.
They do go bad, after all.
Load test the battery too, and check battery voltage under load
(starting). If the voltage goes through the floor when you try to start
and the battery is good, the starter is shot.
Peter
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