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AC high side 50psi, low side over-charges immediately

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Old 07-24-2019
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AC high side 50psi, low side over-charges immediately
I thought my son's civic just needed a r134 recharge, but the low side pushed refrigerant back into the hose - was way over pressure. I ran a vacuum for an hour or so and started over, but high side never got above 50psi and low side was immediately high again. Do I have a blockage somewhere? (was doing this with manifold gauges)

What else could be causing that?

Tom J
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Old 07-24-2019
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Re: AC high side 50psi, low side over-charges immediately
From the service manual...

High side is abnormally low:


Low side abnormally high:
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Old 07-24-2019
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Re: AC high side 50psi, low side over-charges immediately
Thanks!

After writing this, I realized we didn't check the relays; will do that today just to make sure.
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