Engine lacks power with ac

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_nickjoseph

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Aug 29, 2019
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97 ext cab 5.7. I changed the compressor orifice tube accumulator and the condenser as well as the lines. My freon is perfect and it blows cool but not hard at al even after cleaning the heater core. Anyways with the ac on the trucks isle doesn’t change at all and it feels slower and like it lacks power. This is with a new 5.7 I just put in it, as well as before I changed the motor. Any insight as to why? Any sensors I need to look at?
 
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