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#1
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126 - No heat at floor
84 380SE, 95K miles, its a cherry (a bright red 126!). When in heat mode with temperature wheel at full heat, i get full heat at the windshield. When I turn the wheel from hot to cold there is a point about halfway where it will become 100% air flow from center dash vents (cool air). Doesn't matter if i'm in economy or compressor mode. After searching the threads, I suspect either defrost element behind the radio or CCU (solder joints hopefully) Any consensus on which it is?
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65 190d sold 85 380SE sold 87 560 SL 180K 84 380SE 96K (mint) Last edited by derryb; 11-13-2006 at 01:42 PM. |
#2
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Did you first try closing the dash vents using the 3 sliders? Generally speaking, even if the pods for the dash flaps are leaking, you will still get a fair amount of volume from the floor vents if the dash vents are closed.
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08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280 |
#3
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With temperature wheel at hot mode all hot air is coming out of defrost. Only when i turn the wheel to cool does a flap cycle and allow air to come out of center vents. This is cool air coming out of center vents and will do me no good in the floor area when i'm looking for heat.
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65 190d sold 85 380SE sold 87 560 SL 180K 84 380SE 96K (mint) |
#4
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I've mentioned it a couple times. Check the changeover valves located under the panel to the right of the radio. Test each one for electrical continuity. They burn out over time, leaving the heat/cool flaps in their default positions. You should check them first before trouble-shooting the vac elements. Two of mine were burned out, and caused most of my ACC problems (the other culprit being a bad sampler fan).
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
#5
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thanks. Are they individually mounted or are they a one piece unit as in my 560SL. Also, does anyone have a vaccum element schematic for the 84 126, I can't get but halfway in to braingear before it quits responding.
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65 190d sold 85 380SE sold 87 560 SL 180K 84 380SE 96K (mint) |
#6
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They are individual. There are 5 or 6 of them mounted on a metal bracket.
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
#7
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Still troubleshooting
only element i find next to accelerator has a green vacuum line. Is this the pod for the floor flaps? Sure would like to have a good HVAC vacuum schematic for 85 380SE. Searched and tried braingear, no luck. Does anyone know if my schematic for 87 560 SEL is good for 85 380SE?
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65 190d sold 85 380SE sold 87 560 SL 180K 84 380SE 96K (mint) |
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Join the club... I think all of us have 380SE models (mine is a 1985 - manufactured in October of 1984) and mine is the same way. No matter the setting, I get most heat in the defrost, but I still get quite a bit on the outside dash outlets. I just turned them completely downward and they are pretty sufficient at warming the legs/feet. Of course it does not get all that cold here in the winter (and it looks like everyone else here posting also lives in mild winter climates), but I am sure if I lived in the north or a colder climate, I would be more concerned, but its not enough of a problem for me to bother fixing it now. I could understand though wanting it to work perfectly on a otherwise mint car (which mine is not).
My A/C does not work, but I am assuming if it did... all air comes from there too? Seems like this is one of the first things to fail on these cars. I think a recall is in order. Another thing I have noticed- not sure if it is normal, but if I actually put the mode on defrost, the air comes out at full speed- not matter the fan speed I set it on. Any other mode setting and it lets me select the speed with the fan speed switches, or it lets the automatic work. The HVAC is the last of my concerns now anyway, what, with something busted on my power steering system. To the shop next week I suppose..... 268,300 mile and counting..... Good luck!
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2004 Toyota Sequoia Limited 4wd 1991 Lincoln Town Car Executive 1991 Cadillac Sedan DeVille 1988 Mercedes 300SEL 1972 Chevrolet Caprice Kingswood Estate 9-passenger wagon 1973 Pontiac Grand Ville (Prior MB's: 1974 240D, 1985 380SE, 1984 190D, 1993 400SEL) |
#9
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Try to unplug the power supply to the heater/waterpump. If the pump has seized up it may throw the cc into faut mode and will give you warm defrost all the time. Good luck
Paul
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Paul Roberts Mercedes Centrum Inc. Bellevue,WA. |
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What "pump" are you referring to that may have seized?
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#11
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Econ heat diagram
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#12
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Which element controls the air that goes through the channel under the dash and out to the doors?
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1985 380SE Blue/Blue - 230,000 miles 2012 Subaru Forester 5-speed 2005 Toyota Sienna 2004 Chrysler Sebring convertible 1999 Toyota Tacoma |
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