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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 38,240
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Don't check your AC if you don't need to. I have R134 gauges and hooked them up to read pressures. The Schrader valve does not need to be disturbed or it may start to leak. Next time I drove the car the AC was empty. This won't happen often but it can so why take a chance? If it works, don't fix it.
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