Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone C. Chevrolet Lumina 2000

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2000 🢒 Lumina 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Cooling Insufficient - Air Conditioning (A/C) System - Pressure Zone C

Step	Action	Value(s)	Yes	No
1	Were you sent here from the Cooling Insufficient, A/C System diagnostic table?	--	Go to Step 2	Go to Cooling Insufficient - Air Conditioning (A/C) System
2	Visually inspect for restricted air flow at the condenser. Is the air flow through the condenser restricted?	--	Go to Step 3	Go to Step 4
3	Repair the air flow restriction condition or replace the condenser, if damaged. Refer to Condenser Replacement . Is the repair complete?	--	Go to Step 9	--
4	Start the engine and turn the A/C ON. Are the cooling fan(s) ON and operating properly?	--	Go to Step 6	Go to Step 5
5	Repair the cooling fan operation fault. Refer to Electric Cooling Fan Diagnosis in Engine Controls - 3.1L. Is the repair complete?	--	Go to Step 9	--
6	The engine still idling in PARK. The A/C still turned ON. Feel the liquid line on both sides of the expansion (orifice) tube. Is the temperature the same before and after the orifice?	--	Go to Step 7	Go to Step 8
7	Turn the engine OFF. Replace the damaged/faulty expansion (orifice) tube (orifice opening too large and/or the O-ring is damaged or missing). Refer to Expansion (Orifice) Tube Replacement . Is the repair complete?	--	Go to Step 9	--
8	Turn the engine OFF. Air is in the refrigerant system, or the system is overcharged. Verify A/C system capacity. Refer to System Capacities . Recover, Evacuate and Recharge A/C system to specifications. Refer to Refrigerant Recovery and Recharging . Is the repair complete?	--	Go to Step 9	--
9	Take readings of the low and high side pressures as well as the IP center outlet air temperatures after repairs are performed. Compare the pressures and outlet temperatures to those listed in the A/C Performance Table. Refer to Cooling Insufficient - Air Conditioning (A/C) System . Are the readings within the specified ranges?	--	Got to Step 10	Go to Cooling Insufficient - Air Conditioning (A/C) System
10	Operate the system in order to verify the repair. Did you correct the condition?	--	Got to Step 11	Go to Symptoms in HVAC Systems - Manual
11	Disconnect the J 39500-B . Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L. Is the action complete?	--	System OK	--