940 L4-2.3L SOHC VIN 88 B230F (1992)
High Pressure Safety Valve HVAC: Description and Operation
Compressor Relief Valve
NOTE: On the 1993 models with R134a, the relief valve is mounted on the compressor.
Relief Valve Installed On Connecting Pipe.
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The valve should open if the system pressure becomes excessive and close when the pressure returns to normal.
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If the valve opens, check that no system fault is present.
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The type of relief valve installed depends on the type and model of car. The location may also differ.
