You have too much Freon in the system. When you stop the high side pressure gets higher due to low air flow, this will turn on the Aux fan in front of car. If pressure continues to increase it will turn off the AC compressor. If you remove a small amount of Freon this problem will go away.
Regards, Trampas -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Thomas Sent: Monday, June 20, 2005 11:50 PM To: Don & Teresa Merriman; Mercedes mailing list Subject: Re: [MBZ] Air Conditioning Mystery Is the condenser condensing at low speeds? Is there a cutout on the blower if things are not as they are supposed to be in the system? I went through the whole circuit diagrams and schematic for the A/C system a couple of years ago, and forgot most of it, but I do remember there are a bunch of switches and such that monitor temps and pressures, and turn stuff on and off when those things change. Might be worth studying the diagrams and seeing what is connected to the blower to shut it off? That isn't much help, but in studying the schematics I got a good understanding of how it "works" or not, as the case may be. --R Don & Teresa Merriman wrote: > Hola amigos > I have a air conditioning mystery with my 1982 380SEL. Replaced the > condenser and compressor, both only lasted 472,000 miles. Interesting > that the Delco Morraine OE unit only lasted 472,000 miles, same unit > as used on new GM products in the 80´s. The blower motor works at all > three speeds, the button for the automatic temp control system works. > The temp control wheel works OK. The problem is when the air flow is > slow or non exitant. Driving on the open road with a constant air flow > the air conditioning works all day long, the problem is when the air > flow is cut down, stopped, in traffic, or when you really need the > air. The engine temp is consistent at 80C, never a under the hood temp > too high, only when stopped or low air flow. When the temp goes up the > electric fan kicks in at the appropriate temp. The mystery is why only > does the blower quit working when the air flow is low or non existent? > > Gracias amigos > > -- > Don & Teresa Merriman > Market Place Mexico > Vacation Rentals > Property Administration > >------------------------------------------------------------------------ > >_______________________________________ >For used parts email [EMAIL PROTECTED] >For new parts see www.buymbparts.com >For repairs see www.oldworldauto.com > >To Unsubscribe or change delivery options go to: >http://striplin.net/mailman/listinfo/mercedes_striplin.net > > _______________________________________ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
