Anyone have documentation on what the pressure should be?
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Low side pressure on 97 Stratus AC?
Jun 23, 2004
2 Replies
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Low pressure when engine running and A/C clutch is picked, is 30 pounds or lower for most systems.
Well...no.
Given a proper charge of refrigerant, low-side pressure under normal operating conditions will vary between 20 and 50 PSI. Under one certain specific test condition (or with a faulty expansion valve), low-side pressure will drop below 20 or even go into vacuum (negative pressure). But this "30 pounds or lower" stuff of Mr. Elbe's is just wrong.
DS
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