[diesel_mercedes] Belated introduction and hello

 

Hi there,

I joined a few weeks ago right after picking up my (first) mercedes. She's a 1983 300SD, white with dark brown interior (though the p.o. put in blue seats). She's got about 223k on her and a busted odometer. I've named her "Betty White"...seemed to fit somehow.

She's fairly solid mechanically, but I have my work cut out for me as I'm eager and interested, but totally "new" to the world of repair and even maintenance. You all seem like a helpful and knowledgeable bunch, and I've enjoyed reading up while lurking :) I hope you won't mind sharing your collective wisdom with an enthusiastic beginner.

I thought I'd start with some simple stuff, and I've already been thwarted. My plan for phase 1 was:

1) diesel purge
2) fuel filters
3) coolant flush n fill
4) oil change

Went to do the diesel purge as per the instructions in the mercedessource kit, and the fuel line section that you re-route so as not to spill fuel all over god's country was "newer" and too short. So I've got some biofuel rated fuel line coming, just gonna start with replacing that section (my friend has a new biofuel company here, so I'd like to carefully experiment with B100 and blends)

Thought I'd check the air filter while I had the hood up, and I couldn't get the dang top off...what am I missing? I removed the wingnut and bolt and 4 clips....and could not lift that lid.

Coolant flush and fill (my new mechanic, also a 300SD owner, strongly recommended that asap) is getting more pressing as our temps are dropping. I've got Zerex ready to go, and I bought one of those $4 "kits" (mostly for the instructions on the back) but now I realize they want you to cut on of your lines and leave their plastic piece installed all the time. Doesn't that restrict the flow? Or would it be fine? How else would I do it? Any video or photo instructions?

There's plenty of info on the internet, but I want to get my hands on at least one manual to start (actual book or DVD based, no matter)....what would you all recommend to start with?

Thanks folks! Happy weekend!
Caitlin (and Betty White)

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Re: [diesel_mercedes] Voltage to monovalve - how does it work?

 

Possibly related to the problem, though not the monovalve itself, is the
temp sensor in the dash. When mine broke, from me messing around under
the dash, the A/C system only worked at MAX, as the sensor wasn't
sending info. I got a replacement from Brian's rust bucket, and it's
been fine ever since.

Rob
'85 300D
Garden Grove, CA
==
On 10/29/11 12:56 AM, diesel_mercedes@yahoogroups.com wrote:
> Voltage to monovalve - how does it work?
> Posted by: "n61cm"jim@tazwade.com n61cm
> Date: Fri Oct 28, 2011 4:08 am ((PDT))
>
> I replaced my monovalve, nothing obviously wrong with the one I took out. Checked the voltage to monovalve using different settings, it gets full battery power (13.x volts) on max cold in a/c and economy settings, and virtually no power anywhere else. I did notice some 6 - 7 volt readings in the center temp settings when I first started the car up but after it warmed up it would only send voltage on max cold setting. It was not sending voltage even when set to the coldest setting just before the max detent. I don't know if there is a delay or what. Anyone know how the voltage to the monovalves is supposed to work?
>
> Thanks,
>
> Jim

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Re: [diesel_mercedes] Fuel Milage Check '82 240D Auto AC Used

 


 Nate, 
 
I know you are fond of the W123 diesels, I loved my  84 300CD, but have you considered one of the W124s?  Prices appear to be about the same now (at least here in Northeast) as the remaining decent W123s are not going cheap and the W124s are more plentiful and coming down in price.  I'm on my 2nd one, a 1991 300D with 277K.  Fuel mileage is consistently closer to 30MPG, last tank of B20 came out at 30.13mpg on a run up to Boston and back.  Even mixed driving it only drops to around 28-29mpg.  repairs and parts are reasonable as well.
 
Joe

SWMBO driving , 21.5 MPG , 193 miles , not bad for a car with 328,000 + miles on it .

-Nate

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