First, load test the battery. A trip to any FLAPs should test it for free. The load test will show if you have a battery with failed internal plates, which will not then give you full amps to run starter.
If the battery loads tests good, then I suggest the starter solenoid possibly welded it's self internally to "stuck" position which does not engage the starter bendix, since the starter runs free when hooked directly to 12 volts. Start simple by having the battery load tested, fix that problem, if it is one, and since the battery is self discharging, [if I read your post correctly] it is suspect. It is possible to have more than one problem arise at the same time, however, such as the starter solenoid/bendix function and the battery having a warped plate. [possible scenario with high charge rate and low water, perhaps]. Hope this gives you some place to start.. Good luck. Grant... On Mon, Aug 17, 2015 at 6:39 PM, Greg Fiorentino via Mercedes < mercedes@okiebenz.com> wrote: > Thanks for all your thoughts. Further information: > > Shorting the starter results in starter spinning without engaging flywheel. > Solenoid *thunk* without starter turning began after my son attempted > starting with the 50 amp momentary setting on my 10 amp battery charger. > Is > there a fuse or other component likely to have been affected by this event? > > TIA again. > > Greg > > -----Original Message----- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Rich > Thomas via Mercedes > Sent: Saturday, August 15, 2015 5:02 PM > To: mercedes@okiebenz.com > Cc: Rich Thomas > Subject: Re: [MBZ] Starter/Alternator/Battery Problem 240D > > Sounds like a bad battery > > --R > > > > On 8/15/15 7:47 PM, Greg Fiorentino via Mercedes wrote: > > So, the 1980 240D has strange symptoms: > > > > > > > > Intermittent battery draining and when battery is recharged to full, > > the ignition switch causes a loud click (the solenoid actuating) but > > then no engine turning. Are these symptoms likely associated? Is one > > causing the other? > > > > > > > > TIA for your thoughts, > > > > > > > > Greg > > > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
