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#1
06-05-2007, 09:18 PM
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Warm on the left, cold on the right...
Driving home today, the A/C was nice and cold. Temp wheel was set at MIN. I had to pick up my daughter and take her on an errand about 40 minutes after I got home. Hop in the car, hit the A/C and the vents on the driver side began to blow warm. The vents in the right were still ice cold. It was like a dual system. When I came to a stop, the driver side began to blow cold. accelerate, then warm again. Right side stayed cold. Out of curiosity, I moved the temp wheel to MAX. Both side got hot. I then moved the temp wheel to MIN, and both sides got nice and cold.
I checked the freon pressures, and they were fine. I'm thinking it's the mono valve. Any ideas?
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K 
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#2
06-05-2007, 11:33 PM
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I think your A/C is fine. It sounds to me like you have a problem with a vacuum line to an damper under the dash.
TimK
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EPA 609 & 608 HVAC Certified _________________________________________ 83' 300D Turbo - 300K + Miles 00' 1.9L TDI Beetle 85' 6.5L Turbo, GV-OD, GMC Suburban, 67' 2.5L Diesel NA - Land Rover Series IIA Here's what you do if it's so cold your diesel fuel gels. Smear some on some toast and stay inside until it warms up outside.
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#3
06-06-2007, 10:06 AM
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clean ccu terminals
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the sooner you start... the sooner you'll get done  If it ain't broke, don't fix it.. Its always simpler to tell the truth... 2007 Honda Accord EX 2007 Honda Accord SE V6 96 C220 97 Explorer - Found Another Home 2000 Honda Accord V6 - Found Another Home 85 300D - Found Another Home 84 300D - Found Another Home 80 300TD - Found Another Home Previous cars: 96 Caravan 87 Camry 84 Cressida 82 Vanagon 80 Fiesta 78 Nova Ford Cortina Opel Kadet 68 Kombi Contessa
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#4
06-06-2007, 10:10 AM
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I have the vacuum disconnected due to various leaks in the dash. Currently, the air is split between all dash vents and defrost vents. This morning the a/c worked fine.
Good idea to clean the CCU terminals. I need to replace a burned out bulb in the wire "octopus", so this will give me the added task to make it worth while.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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