>> If I were draining the cooling system and pulling that hose anyway, I >> would take the opportunity to test the monovalve.
I ought to amplify that---of course I mean "test the monovalve and see if it needs replacement." They don't fail nearly as often as on the 123 and 126 chassis, it seems like, but they do fail. On my 300D I get uneven temperature control especially when accelerating from a stop, and I strongly suspect that the monovalve is not closing all the way when it should. I asked at some point how to test it, and someone (Peter?) said that it was pretty obvious---it either is supposed to close all the way when current is applied, and open when not, or vice versa. No "partially open" state is implemented or needed---it's controlled not by a variable voltage but by PWM from the climate control brain. Alex Chamberlain passel of 124s _______________________________________ 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
