Looking at a 300D
I was on this board a few years ago and found it very informative. I have been on the lookout for a decent 87 turbo D and found what looks like a good one. A couple of things though. I'm not too familair with diesels but the clatter on startup is really loud, although when its warm it levels off. Drivability is real good, and those seats, what a treat. Big thing though is the heater works only on defrost and the controls do not respond. Is this big or fairly simple?
The parts aren't a fortune but the labor is. Believe the book time is eight hours. Budget as much as 12 if your doing it yourself for the the first time.
Take a picture of every fitting as you go into the dash.
Put all the screws into individual labeled bags.
No matter the issue replace the vacuum pods. These go with age and you don't want to go back in a second time. Heater Cores can leak as can the evaperator. You may consider replacing the evaperator regardless of its current condition.
If its a vacuum pod you can test it by opening the panel on the underside of the dashboard, passengers side. There is a power strip looking unit with a dozen vacuum cords going in and out. Get something like a mittyvac and test each line to see if it holds vacuum. There are two (I think its two) pods accesable without removing the dashboard. Hopefully its one of these.
The failsafe mode for the AC is full defrost.


