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-   -   A/C HIGH bouncing - Blockage? (http://forums.pelicanparts.com/showthread.php?t=862103)

mikes603 04-23-2015 10:43 AM
A/C HIGH bouncing - Blockage?
 
https://www.youtube.com/watch?v=yJJqNlftFlg

Here's a video of my R53 (new owner) running with an AC manifold attached. Notice the High side bounces from 150 to 250psi in a cycle with the fan kicking on. Low side wanders around 30psi. Shop was at 60degF

AC blows cold but not freezing cold. Maybe 50degF (I need to put a probe in a vent still).

Does this indicate a blockage at the expansion valve? Or is there a sensor that runs the expansion valve that could be faulty? Or do I have a non-condensable in the system?


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