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  #1  
Old 08-14-2007, 08:25 PM
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Join Date: Jun 2007
Location: NORTH WEST NEW JERSEY
Posts: 97
Coolant-flush now a/c problems

Flushed my entire cooling system. Now when I run a/c it's not as cold as it used to be. I can feel hot air comming from the defrosts vent and at the floor level vents . Whats up? 85 300SD 617 126 Checked a/c charge ,it's OK.
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Old 08-14-2007, 09:15 PM
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mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
Posts: 4,872
Sounds like the mono valve diaphragm is either cracked, or the mono valve is not working. It needs 12v to stay closed.
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Old 08-14-2007, 09:55 PM
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Were is the mono valve? And how do I fix it?
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