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Old 07-27-2001, 09:05 PM
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Join Date: Jul 2001
Posts: 74
I have a 1987 190 European spec model. A/C control panel is different than US models. I work in Kuwait and A/C is a life or death matter. The A/C performance is almost adequate now for summer temps in Kuwait(after system flush and compressor, drier and expansion valve change) but have some little things that just bug me. My temperature slider control does not affect the temperature of cold air from the vents(it has never worked since I have had the car) What is this slider actually supposed to do to the system to change the temperatue of the air. I noticed in the wiring conduit that goes to the A/C clutch that there are 2 wires that have been cut in the past and are not connected to anything. I have a wiring schematic but no luck finding these wires. When I turn the blower up to 3 or 4 the temperature of the air becomes much warmer. When I have to sit at a light for over a couple of minutes the temperature of the air rises dramatically, this has always been a problem but not as bad as it was before the recent maintenance.
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Old 07-27-2001, 11:38 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
I am only remotely familiar with the manual controls (only Tempmatic in US). I think it is like a thermostat. It will change the cycling temperature. This will have absolutely no affect on your system if it doesn't cool well enough to cycle.

Be sure that the recirculate door is workin properly as it will raise the duct temp by 10deg F if it isn't.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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Old 07-28-2001, 05:10 AM
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Join Date: Jul 2001
Posts: 74
There is a pink valve behind the A/C console. What is is supposed to do? Does this control the flapper?
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Old 07-31-2001, 04:18 PM
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Join Date: Jul 2001
Posts: 74
I just found another problem by accident. The A/C compressor runs anytime(even with heater selected) the blower speed switch is in any postion other than off.
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