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Old 08-06-2002, 06:10 PM
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Question Climate Control question

I think there is something wrong with my climate control system of my W124 but am not sure. It appears that the only temperature guage that the system uses to manage the A/C output is the external reading. If the outside temp. is 90 degrees and the internal temp is comfortable (say 72 by feel) then the A/C will blow strong unless I run the setting up to the white/red area (about 82).

Is this normal? One would think that there would be an internal sensor that would allow me to leave the setting on 72 and the A/C would back off when the cabin became comfortable?

Any thoughts?

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Old 08-07-2002, 08:34 AM
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Air flow across the in-car temp sensor mounted in the dome lamp is designed to allow for the variable speeds from the blower motor.
The system is designed to keep the temp(inside the car) with-in 1 deg of the temp wheel after 10 minutes at 15 inches from the inside roof panel. Blower speed will only slow down WHEN the system has gotten with-in that 1 deg spec.

The 1994 & later cars with the "micro-filter" dust system do have a different electronic blower regulator & seem to keep the blower at a higher speed longer than the 1993 & earlier cars did.

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