A/C Blower - Acceleration
 

The a/c blower power diminishes when the gas pedal is pressed. Also, there is little to no air flow from the center vents.

Can anyone shed some light as to the reasons for these two problems?

I'd give it a try if I knew what car was involved.

Sorry, 1994 MB C280.

I'm having the same issue with my '96 C220. Can anyone help?

TIA,

JHawk

95 C220 A/C air flow
 

Having same problem as previous post. Any ideas on what is causing low air output when acccelerating, and also little air out of center vents after about 2 - 3 minutes of driving car with AC on. Side vents work just fine and AC is cold.

ACC Blower Flow
 

Although I am not intimately familiar with this model, in general I would look for a vacuum leak in the parts which control the positions of the flaps in the air ducts; these flaps direct the air to the various outlets and, if there is a vacuum leak in the system, it will generally show up diring acceleration, when the manifold depression (i.e. vacuum) is lower. There should be a procedure for checking out the system for leaks in the Mercedes-Benz shop literature.
During acceleration, see if you can tell if the air starts coming out of different outlets; for example, it might stop at the dash outlets and start coming out the defroster outlets. Probably the blower is running at the same speed, but the airflow is changing where it comes out.
Hope this helps you.