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The system pressure for the air conditioning unit in a 2002 Dodge 1500 Van with a 318 motor should typically be around 30-40 psi on the low side and 200-250 psi on the high side when the system is operating properly. These values can vary slightly based on ambient temperature and other conditions. It's important to refer to the vehicle's service manual for specific guidelines and to ensure the system is adequately charged with refrigerant.

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1w ago

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