Center vents barely blowing

Can anyone PLEASE help me? I recently got the A/C working on my 1983 300D, but the air barely blows out of the two center vents. The air will blow strongly out of the far right and left side vents, but not the center ones. If anyone can provide me with possible reasons and/or solutions to this problem, I'd be GREATLY appreciative.

If you'd like to email me directly, my email address is maptgpkrp@msn.com

Thank you VERY MUCH!!

Forums

Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W123

We have a 87 300TD that does

We have a 87 300TD that does the same thing. All the air comes out of the side vents. Also, whats the difference between the button that says EC on the A/C controls and the other ones. It seems that it disengages the compressor.

center vents barely blowing

the actuator for the center vents is leaking. The ec button is for fresh air.

Center Vents barely blowing.

I was told that the center vents are for blowing cold air only. I have found that moving the temp control from full cold to about 75 and then back to full cold can sometimes,get the center vent to fully open on a/c. Also it is possible to block the center vent's flapper fully open by removing the glove box, turning on the a/c and then making sure the center vent's flapper valve is fully open, you can insert a screw into the vent box behind the open flapper, keeping it open all the time. You then would have to control air flow with the outlet vents on the dash front. This is a little trouble but it works to get that flapper fully open. The only thing with this is, if you have a vacuum leak to the the actuator, you could have problems with other a/c or vacuum operated systems on your car due to the leak. But it could just be a sticking actuator that you can over ride or repair.