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Permanent repair of leaking service port valves

Toenail on Wed August 22, 2012 5:50 PM User is offline

Year: 1999
Make: Chevrolet
Model: Tahoe
Engine Size: 350
Refrigerant Type: R134A
Ambient Temp: 90
Pressure Low: 46
Pressure High: 187
Country of Origin: United States

I found a pair of brass caps that screw into the service ports and seal them even if the valves are leaking when the gauges are removed. I threw the plastic caps in the trash. This is a much lower cost fix than replacing the faulty valves and is permanent.


buickwagon on Thu August 23, 2012 6:46 AM User is offline

Ok, so where did you find them? There's at least 5 different styles/sizes of caps for R-134a connections.

I've saved hundreds on service by spending thousands on tools.

ezautoac on Tue October 02, 2012 8:00 PM User is offline

Why don't you replace the valves... they are literally the cheapest A/C repair you will ever do. Probably cheaper than those caps... which will probably seize on there.

iceman2555 on Tue October 02, 2012 10:50 PM User is offlineView users profile

Total agreement in repairing the system. The caps are not the primary seal of the system. The valve itself is the primary seal. The cap is a cover to protect the valve from dirt or other contaminants. Schrader valves are often considered to be the #1 source of ac system leakage.

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