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#2
12-10-2007, 02:47 PM
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monovalve ?
turn the heat on ,then feel the hoses at both sides of the monovalve, if only one side is warm ,then you probably have a stuck closed monovalve plunger , repair kits are about $35 and are available right here from Phil, if you disconnect the wire at the monovalve , the plunger is supposed to open in a default mode , but that's only if power to it fails ,and it's not stuck closed, so it could be stuck closed..
Brian Last edited by Benz Mercedes; 12-10-2007 at 07:36 PM. 
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#3
12-10-2007, 03:41 PM
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I believe that the defroster will also work even if the monovalve is in need of replacement, will it not?
__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century  OBK #55 1998 Lincoln Continental - Sold Max 1984 300TD 285,000 miles - Sold The Dee8gonator 1987 560SEC 196,000 miles - Sold Orgasmatron - 2006 CLS500 90,000 miles 2002 C320 Wagon 122,000 miles 2016 AMG GTS 12,000 miles
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#4
12-10-2007, 03:49 PM
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Quote:
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#5
12-10-2007, 03:52 PM
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Do you think this varies from one model to the next? Someone mentioned it to me when they were suggesting ways to isolate heater problems.
__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century OBK #55 1998 Lincoln Continental - Sold Max 1984 300TD 285,000 miles - Sold The Dee8gonator 1987 560SEC 196,000 miles - Sold Orgasmatron - 2006 CLS500 90,000 miles 2002 C320 Wagon 122,000 miles 2016 AMG GTS 12,000 miles
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no heat 87 420sel
Linear Mode
