[Jeff Reynolds]

rice400 – I hope this applies to someone else 🙂 My 05 F150 cools great on highway but not so good idling. I replaced orifice, evacuated system, and charged with 34 ozs of refrigerant as Ford specifies on label. Still only cool at idle.

It was 93 degrees and pressures were 36 / 256. Lo side seems a bit lo. Pressure temperature chart shows lo should be 45 – 55 and hi 250 – 270. What can make lo side run a lower pressure while hi side in normal range?

[Author]

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