> I am going to disconnect the foam tube and see if it will work > on different temp settings. What is going on with that tube is > it a vacuum to draw air in slightly from the cabin? > > Douglas
The tube is just a way to draw air across the temperature sensor. There should be a small (0.5 inch) "vent" in the flat top of the dash, right in the middle (left to right). That is the temp sensor. But to be sure there is air flowing over it so it can get an accurate reading, there is a hose going to the blower motor "suck" side. This way there is always cabin air going through the sensor. I altered mine. Rather than have an automatic control, I removed the temperature-variable-resistor with a fixed resistor. This changed the red/blue knob from a thermostat to a temperature control (like the old manual systems). I don't remember what resistor value I used, but I could look it up. -- Philip _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
