PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   300SD boiling batteries/charging problems (http://www.peachparts.com/shopforum/diesel-discussion/168231-300sd-boiling-batteries-charging-problems.html)

kartoffelpanzer 10-22-2006 04:42 PM

300SD boiling batteries/charging problems
 
Hello-

I've been lurking on this forum for awhile, just registered recently.

I have a 79 300SD (W116) that I'm restoring. I'm having what appear to be some battery/charging issues. Middle of last week I was driving on the highway, when I exited and stopped at a light I smelled rotten eggs/sulfur. Popped the hood and it was coming from the battery, which was spitting fluid/gas out the vent.

I replaced the battery and bought and installed a new voltage regulator (from mercedesshop). I fired up the car, went down to the auto parts store and had them recheck the charging voltage. They got something like 16.5-17V.

Do I need a new alternator? Is there anything else I should check?

Thanks in advance-
Rob

ForcedInduction 10-22-2006 04:46 PM

You definitely have a faulty new regulator or a bad alternator.

My old alternator did exactly the same thing. It would randomly run up to about 18v, sometimes for a few seconds and sometimes all day.

I'd get a whole new alternator, regulator and battery. Don't trust the old battery anymore.

kartoffelpanzer 10-22-2006 05:01 PM

Thanks
 
Thanks Forced.

Forgot to mention age...I've only owned the car for the past couple of months and the PO (of ten yrs) didn't keep records. PO before that kept some records.

Body has 395k miles on it, motor was replaced and has about 150k miles on it. From what I understand, an engine replacement is engine and nothing more...so I gotta assume the alternator is original...

I've read that the alternators are strong but maybe not 395k miles strong :rolleyes:

Rob


All times are GMT -4. The time now is 12:28 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website