Thread: heat blowing from some vents and cold from others
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Old 06-28-2011, 11:15 AM
TMAllison TMAllison is offline
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Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
Use the CCU next time it blows warm. Look at the temps of 3 & 4. If the left is much higher than the right, open the hood and whack the duo-valve with a screwdriver handle a few times and then look at the temps again.

If the temps begin to even out afterwards, the valve is sticking.
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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
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