Cooling Insufficient, A/C System - Pressure Zone D - GMC chevrolet camaro 2000 Service Manual

1-18 Heating, Ventilation and Air Conditioning
Cooling Insufficient, A/C System - Pressure Zone D
A/C System Pressure - Zone Classification Graph
Step
1
2
3
4
(kPa) (Psi)
690 100
621 90
552
80
483 70
414
60
345 50
276
40
207 30
138
20
69
10
100
690
200
1379
300
2069
High Side
400
2750
(Psi)
(kPa)
Cooling Insufficient, A/C System - Pressure Zone D
Action Value(s) Yes
Were you sent here from the Cooling Insufficient,
A/C System diagnostic table?
-
Go to Step 2
1. The engine still idling in PARK.
2. The A/C still ON.
-
3. Feel the liquid line before the expansion (orifice) tube.
Is the liquid line cold before the orifice?
Go
to Step 3
1. The A/C system still operating.
2. Carefully feel along the surfaces of the following high
side components for a sudden drop in temperature.
(The high side components should feel warm/hot from
the compressor all the way to the orifice.)
• The compressor discharge hose
-
• The condenser
• The liquid line between the condenser and the
orifice.
Was an abrupt drop in temperature noted along the
surfaces of any of the components listed? Go to Step 4
1 . Recover the refrigerant.
2. Remove the restriction from the component, or
replace the component which produced an abrupt -
temperature drop
Is the repair complete? Go to Step 17
HVAC
(
(
590674
No
Go to Cooling
Insufficient,
A/CSystem
Go to Step 5
Go to Step 5
(
-