I bought my very first MB last month and I am totally diggin it. My heat/ac/vent do not work at all. The defrost will put out a little of air. I think it might be a vac issue but do you all with experience think it is more of a blower of CC Unit issue?? Thanks a bunch and I hope ya'll have a great Turkey Day!

Tell everyone the model of MB and the year.

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Rev. Dr. G. Church of the SubGenius
It doesn't take a genius

1984 300 D Turbo


Does the signature function automatically put my car on the bottom of each post???

Yes! Mine does!

Zack, start by reading post 18 here: http://www.peachparts.com/shopforum/showthread.php?t=205840&page=2

Sounds a lot like the problem I had when I got my first 300D. Once you know the CCU and blower motor are working, if the warm air is not comming out of the right vents, you may have a vacuum problem.

If you need some help getting to the CCU, here is a great reference article that includes tearing into the dash. http://www.peachparts.com/Wikka/W123Evaporator
You don't need to remove the steering wheel for what you'll be doing.

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'83 240D (for sale)
'84 Harley FXRT
'85 300CD Turbo (Sold)
'85 500SEC (for sale)
'04 Dodge Dakota Quad
'06 Harley FLHTCI
'97 SL320

I am heading there right now. Thanks a lot for the help. Always appreciated.

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http://www.libertyagrifuels.com
1984 300D Turbo
1980 300SD Sold
1983 300TD Sold
Dagger 16 ft. Legend Canoe (for the weekends)
Marin Northside Trail Mtn. Bike

Zack, is it putting out any heat at all?

If no heat then...One of the most common things to go and also easy to replace is the monovalve. take out 4 screws. replace guts of monovalve. reinstall 4 screws. viola. Cost for monovalve replacement....$20.

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Frank
84 500SEL EURO 101K ( JUST LIKE MY 1ST WIFE. GLAD TO GET RID OF HER! )
85 300D 310K (sold)
90 350SDL 184K sold
83 300D 118K (sold)
88 300E 153k (sold)
93 400E 105K (sold)