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#1
03-08-2005, 02:35 PM
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380SL heater diagrams
Anyone know where to find heater diagrams for 380SL's ... got it all opened up (inst cluster and glove box) Heaater changes idle ???? and it seems to have a mind of its own. Ordered factory manuals but of course they are back ordered ....
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#2
03-08-2005, 05:00 PM
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Do you have ACC II (horizontal push buttons)?
Rich Mayer 82 500 SL
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#3
03-08-2005, 10:29 PM
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Vertical Push buttons
No it has 4 vertical push buttons ...
DEF, BI-LEVEL, AUTO HI, AUTO LOW, OFF I found a bad diaphram on the pass side fresh air door ... still acts the same with that bi-passed ???? Know of a good place to get VDO diaphragms? Drake
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#4
03-09-2005, 08:17 AM
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Sorry, I meant ACC III with horizontal pushbuttons. You must have ACC II (must be an 81 or early 82 car because ACC III started during the 82 model year, I do believe).
Anyway, to answer your question, I have a VDO actuator literally in my hand from my parts car. It is the heavy-duty version (only one is used to work the main flap, not two of the single-action pink-and-black Behr actuators). It holds vacuum both directions. I was going to put it in my car but I have ACC III, which does not use the heavy VDO actuators. It's yours in today's mail for $20 plus actual shipping. If interested, please confirm that the actuator you are replacing has two vacuum lines running into it (one for each direction). Rich Mayer 82 500 SL
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#5
03-09-2005, 05:09 PM
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Pay five bucks to George Murphy (george_murphy@compuserve.com) for his troubleshooting guide, which includes a vacuum diagram. He also sells parts at reasonable prices and dispenses advice.
__________________
Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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#6
03-09-2005, 08:31 PM
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Great idea. I just bought three diaphragms from him yesterday myself. According to the excellent repair pictorials at www.pindelski.com, which refer the reader to George Murphy, the heavy-duty VDO actuators are not repairable, though.
Rich Mayer 82 500 SL
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#7
03-10-2005, 08:10 AM
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heater changes idle...must be due to vacuum leak. fact that applying the heater makes this change will help you find the leak point. I found in my library reference section "mitchell's" repair guides. this had much easier reading diagrams and procedures for finding leaks than the repair manual on CD. unfortunately, my leak is in the center flap pod (impossible to get at). not only that, the force of the pod openning and closing flap caused the plastic casing of the heater box to crack at the rivets and the pod is sitting loose.
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#8
03-10-2005, 10:41 AM
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found vac diagrams
I found a friendly local Merc mech who had a diaphragm. He also ran off 30 pages of diagrams (every possible switch possition) elct and vac.
will be under the dash for a couple of days !!! Hoping heater fix will fix idle ....
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#9
03-10-2005, 10:57 AM
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Why don't you try disconnecting the line and plugging the vacuum on the engine side where it comes off the back of the intake and see if you still have the idle problem?
__________________
Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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#10
04-24-2005, 12:19 PM
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Threw away ACC II
After getting everything to work:
1 bad diapram 2 broken vac lines 1 arm disc from flapper and many other misc things It worked as spec ... just took awhile sometimes Was interesting to see what was going to come out next. My wife who is in the middle of those hot flashes ..... said no way!! when she needs cold air ... it better be NOW Took it all out ! Panel out of Ford escort fit perfect wood from 380 SE to fill in the hole Oh yeh, Slide out Cup holder out of a Honda under the radio looks like it was designed for the car! Cables to the flappers Toyota valve in the heater line (cable controlled) 4 fan speeds through original fan resistors AC on / off with switch through low temp/pressure safety with line to Idle controller for idle speed. YAHOOOO instant hot or cold and it's been days since she pulled over and told me to walk!!!!!! Didn't fix idle but ..... idle controller from 85 380SE which book said wouldn't work ... had 2 extra pins. worked perfect fixed all and cost $10 !!!!
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#11
04-24-2005, 04:16 PM
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Hey Drake,
You have succeeded in doing what I suspected could/should be done all along... It would be great if you could write up your mod's with sketches and pictures for the WIKI (the DYI link above). I have often wondered if a simple manual means of controlling the heat/ac was feasible. You completed the picture with the suggested parts to integrate or "fill" the holes... Pleae consider writing up with sketches... Thanks!
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#12
04-25-2005, 06:59 AM
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One more thing .... wasn't sure what to do with the Aux heater pump.
So wired it to the back window defroster ... if it is cold enough to need that ...then more hot water should be in order! I'M out sea now so will post the how to later when home and can take pics Do have pic of final look before polishing ... see if I can get it to stick here Last edited by Drake; 04-25-2005 at 10:04 AM.
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