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Old 09-06-2011, 12:19 AM
dude99's Avatar
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Join Date: Nov 2009
Location: Vancouver, BC
Posts: 1,493
Bloody Climate Control

Ok, so I'm trying to get through the checklist on my 1985 380SE Diesel (converted) before winter, yes I know I have lots of time, but I want to make sure I get the Heat fixed before winter. I'd also like to fix the A/C but figure thats a waste of time until the rest of the system functions correctly. So without further adieu, the issue at hand.

Symptoms:
1. Blower will not start unless Bi-level, or Defrost are selected first. After one of them has been pushed the other two setting will work, as will the automatic and hi\low settings.
2. regardless of the setting selected, none of the vents change. Seems the vents will not change from the defrost setting.
3. Temp wheel functions as it should and blower speeds up and slows down in relation to its position. I have noticed that after full heat it doesn't like to go full cold. Thinking this ties into symptom 2 and guessing that the heat flap isn't closing.

Actions taken so far:
1. CCU unit first re-soldered, and then changed out with a unit from the wreckers with no change in symptoms.
2. Mono valve replaced with good unit from the wreckers. Thats how I got heat.

Also finally got around to testing all the lines to the pods, and I'm a little worried... from top to bottom of distribution valves, as numbered on the bracket that holds them
1: holds at 20inhg
2: Bleeds quickly down to 10inhg and holds
3: can only pump up to 5inhg and then drops to ~2-3 and holds
4: holds at 20inhg
5: Bleeds quickly to 0
6: bleeds slowly to 4inhg and then holds

The FSM isn't all that easy to understand so I'm not quite sure what they should hold. I figure number 5 is shot but what about the others?
So thats where I stand. Basically I need some further guidance and some good instructions. Both I'm sure will come my way with abundance from here.
-Thanks, Dude99
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