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Old 03-29-2003, 08:16 AM
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Question 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?

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Old 03-29-2003, 10:01 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
I'd give it a try if I knew what car was involved.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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Old 03-31-2003, 08:47 AM
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Sorry, 1994 MB C280.
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Old 07-27-2004, 03:35 PM
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Join Date: Jul 2004
Posts: 6
I'm having the same issue with my '96 C220. Can anyone help?


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Old 05-30-2005, 06:34 PM
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Join Date: May 2005
Posts: 1
Thumbs down 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.
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Old 05-30-2005, 10:59 PM
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Join Date: Apr 2005
Location: Northern Louisiana
Posts: 481
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.

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