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  #1  
Old 07-09-2003, 05:01 PM
engatwork's Avatar
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Join Date: May 2000
Location: Soperton, Ga. USA
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Yep - no power - monovalve open, 12 volt - monovalve closed from what I understand.
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  #2  
Old 07-09-2003, 05:53 PM
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Join Date: Jul 2003
Location: Michigan
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air conditioner

does the monovalve have a electrical connection on top?
84 300D
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  #3  
Old 07-10-2003, 08:52 AM
LarryBible
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I'm not sure, but I don't think that the monovalve is simply open or closed. I believe that the signal to the monovalve is either an analog signal or a varying duty cycle.

Have a great day,
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  #4  
Old 07-10-2003, 10:31 PM
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air

still hot
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1984300D 190,000 miles used everyday
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  #5  
Old 07-11-2003, 08:30 AM
LarryBible
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To isolate your problem, somehow block coolant flow to the heater core. If the system then makes cool air you will know that you are on the right track with the monovalve and associated controls.

Good luck,
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