One step forward.....
Upon finding out about the Overboost clog, I was having much fun driving my 300D when the battery died.
Voltmeter showed that the battery was indeed not being charged.
The dash light didn't come on, but does light with the engine off and the key in the "on" position.
I bought a new alternator and belt figuring there must be a LOT of miles on both. After two days of overnight charging and driving the car to a deep discharge (glad it's not a gasser), I was bringing the new parts home.
As I pulled in the drive, I heard the idle note dip. Sure enough, the old alternator was charging again.
Again, thinking the alternator and belt was about due, I installed them.
Sure enough, close to 14V charging to the depleted battery.
Not for long.
The only time charging returned was when I pulled the plug on the alternator and plugged it back in. That may have been coincidental as charging stopped happening again in minutes.
If wordy posts bother some of you, I apologize but detail and history have always helped me in troubleshooting.
So far I've:
1. Confirmed battery voltage at the field port of the 3 port alternator connector.
2. Found 1V less at the field connector at that terminal block in front of the battery.
I should say that auto electrics are something I'm fond of.
I'd like to know what "X4/10" on the wiring diagram is and I'd like to know how a potential 70A is getting to the battery from the alternator via relatively small wires. There are twin B+ wires at 2.5mm each but still.
Is there a hidden relay somewhere?
Why does the "Battery" light not illuminate while the car is not charging.
Looking forward to your responses.
TIA
Paul
