Just picked it up yesterday... Its in the 200k club. what should i change and check on it besides the obvious.... AC doesnt work.... Can i convert it to 134a when i redo the system or does it have to stay at r15. Any other widsom or knowledge would be awesome.... i know very little about these cars but very familiar with diesels...

Congrats on the car. You can change it to R134a if you want but dont expect it to work very well. When I redo mine I am keeping it R12.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual

My AC didn't work either until I changed the monovalve. Maybe you're problem is just as simple.

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'81 300SD

the previous owner of my 300D changed it to freeze12... so you can always go that route. it blows "cool" but not "ice cold" like real r12 would

The temperature of the discharge air is dependent on the ambient temperature. If the ambient is 90F., it's perfectly capable of achieving 40F. at the vents.

R12 has additional capability, but "cool" and "ice cold" are still meaningless without actual ambient temperatures.

A good leak free system lasts a long time. Why not repair it well and stay with R12?

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Welcome to Mercedes ownership! My first Benz was a 1981 300SD, it got me hooked. A few more later and I still have the W126. Great cars. Do you know about the free roadside assistance for life? Save me a few times with the '66.

This site is by far the best resource for information and a great group. If you need any parts give Phil a call at the 888 number in the top right corner. Always a pleasure to deal with, great prices, fast shipment, he has earned my business many times over!

Again, welcome to Mercedes Ownership!

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W210 1996 E300 - Daily
W126 1981 300SD - Nice weather
W111 1966 230S - Weddingmobile
AVPCAR 1999 Honda Si - Drag/Showcar
W111 1968 230S - Parts car

We need pictures! :-)

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped

I will put pictures up tomorrow and do a walk around... so far i have noticed that the AC compressor is cracked and has no ability to come back to life.... other than that everythign works great... paint is near perfect and interior is probably a 8 out of ten with no cracks on plastic or leather.... Its got 236k miles. Sold my H1 hummer for this car i liked it so much...

I would love to get my AC and heater working... i can feel heat on the dash but not much air comes out of vents or defrost.... I have only had car in driveway for about an hour now and will throw some pictures up tomorrow...

"free roadside assistance for life?" i bet if they see my beater they just keep driving...

here are some pictures finally.... This was before i carpet cleaned it or anything... but i did find a ton of leaves in the blower motor which is why the fuse kept blowing

Attached Thumbnails

         

Wow that's clean! I like the light colored interior. The early funky labels on the climate control are neat too.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

X2 on the clean. Wow. I'm jealous now.

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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)

Good looking car. Glad to know there are clean ones still out there.

Nice! For starts you're gonna wanna check anything made of rubber for deterioration.

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"