I don't know for sure, either, but my thoughts, too - that 9v oughta get it
started.
Wilton
----- Original Message -----
From: "Scott Ritchey" <[email protected]>
To: "'Mercedes Discussion List'" <[email protected]>
Sent: Thursday, December 20, 2012 1:00 PM
Subject: Re: [MBZ] Warning lights - the continuing saga
Curt, I think 9v should be enough to get the alternator going, it doesn't
take much. After the alternator starts producing power it powers the
field
coils without outside assistance. I suspect your problem is elsewhere.
Is there any chance you shorted out the 12v to the alternator output
terminal during maintenance and blew a fusible link somewhere?
As a test, I'd use some long voltmeter leads to measure the output voltage
right at the alternator with the motor running to confirm suspicions about
the alternator.
I don't have any 201 experience but I think you really need the ETM to
sort
this out in a logical fashion. Otherwise it's just a "shot in the dark",
which only goes so far.
-----Original Message-----
From: Mercedes [mailto:[email protected]] On Behalf Of Curt
Raymond
Sent: Thursday, December 20, 2012 12:27 PM
To: Diesel List
Subject: [MBZ] Warning lights - the continuing saga
So yesterday I took the regulator back out of the alternator on my '84
190D.
You might remember back a couple weeks ago the low fuel, brake, and brake
wear lights came on and I determined there was no charging going on. I
replaced the regulator and all the warning lights went out plus the fuel
gauge stopped working and still no charging.
So there was nothing obviously wrong with the regulator, I stuck in a
spare
I had hanging around which didn't change anything. While I was there I
took
the cover off the back of the alternator, its a PITA for troubleshooting.
I
even took the time to thread the wires back out of the hose.
More troubleshooting reveals with the engine running theres about 9v at
the
small wire from the alternator which I'm given to understand is where
field
current comes from. That would explain why there is no charging. So
clearly
we're not getting enough power from somewhere (the dashpod?) to initiate
charging. I tore into the dashpod again and farted around not really
finding
anything, 201 dashpods are a pain vs 123, they've got teeth, on them
presumably to keep them from moving around, that just slash the backs of
my
hands, all the other lights are fed from lightpipes which are a nightmare
to
wrangle...
I did manage to pop the fuse to the clock which tripped a lightbulb in my
head and I started REPLACING ALL THE FUSES which did get the fuel gauge
working again but didn't help anything else. I need to order some more
fuses, some of the ones I put in didn't look a lot better (aftermarket)
than
the ones I took out and I've used up every single spare I had.
I can't find my copy of the 201 FSM, I'm wondering if theres another fuse
that might be in charge of the charging system?
The last trick I'm going to try is to run a ground wire directly to the
pod.
I had to do that on my '83 240D, it had a bad ground somewhere I could
never
find. The 201 does NOT ground behind the pod like a 123 does, its down
above
the driver's feet somewhere which I also haven't been able to find...
-Curt
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_______________________________________
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For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
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