There is no air coming from the dash vents or the floor but the a/c works fine what could it be thanks for any help

Ever troubleshooted a vacuum system before?
This is a vacuum problem. The vents are controlled by vacuum pods that open and close flaps to block air. When a pod's rubber diaphragm cracks, you get air leaking in, which breaks the vacuum and makes the pod and most likely the whole system inoperable.

A simple test of this is to try to lock and unlock your doors with the A/C running. It probably won't work (if they do, then you are lucky and it could be a much more expensive electronics problem instead).

__________________
1984 300DT turbo 138k mi

Still hauling me to school and back.

Handy Site:
http://www.dieselgiant.com/

The door-lock test doesn't work on 201/124/140 and newer, they have a separate vacuum pump for the locks.

__________________

Gone to the dark side

- Jeff

That's what I was going to say? The default setting is out of the defrost. It's a fun job to take the dash apart and replace the pods.

Chris

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

I have just found a post regarding the pods and the replacement of them I am printing them out as we speak mmm looks like fungsxr did the post

That is a great post by GSXR. It is the one I used to change mine.

Chris

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Ah. I saw the 300d and went for it, guess I got mixed up in that 85 is the last year they were 123s, not 87.

I assume the pods and controls are probably about in the same place? If that is the case, you can test the pods from under the controls in the center console... I won't go into detail because I will be wrong

Hopefully someone can help you more than I can, I only know anything about 123s

__________________
1984 300DT turbo 138k mi

Still hauling me to school and back.

Handy Site:
http://www.dieselgiant.com/

You remove the glovebox to test the operation of the pods in the 124.

Chris

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss