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Old 05-07-2001, 01:17 AM
Jack500 Jack500 is offline
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Join Date: Jul 2000
Posts: 56
I am measuring temperature at the center vent. Tonite during freeway driving I was getting about 82 deg. vent air while outside temp. was 70 deg. The fresh air vent running through the center console to serve the back seat area is much cooler by feel than the center and side front vents. This rear vent is independent of the heating system and only provides fresh air or A/C air. I have searched this site for discussions about the monovalve which I replaced several months ago. I rechecked monovalve and it appears OK. No torn diaphragm and I can certainly get HOT air if I turn the temp. selector toward heat. I appear to be getting some hot water seepage when temp. control is set on MIN. Are there other areas of the monovalve that can cause this? I tried clamping the input heater hose to see if this would eliminate the warmer air but, with limited work space for a clamp, I was unsuccessful in completely blocking off the hose. Certainly the system is designed to allow outside fresh air into the cabin. Any suggestions?
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