A/C System Performance
WARNING: This page is about a different car, the 1994 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If ambient temperature exceeds 100°F (38°C), run engine only at normal idle speed.
- Park vehicle out of direct sunlight. Connect manifold gauge set. Start and run engine at 1500 RPM. Set A/C controls to MAX A/C (recirculated air) and temperature selector knob to maximum cold.
- Set blower/fan on high speed and close doors and windows. Insert thermometer in center vent. Operate system for 10 minutes to allow system to stabilize. Measure center vent output temperature. See A/C SYSTEM PERFORMANCE SPECIFICATIONS table.
- Temperature must be 33-51°F (.6-11°C) at center vent, with high side and low side pressures within specification. See A/C SYSTEM HIGH SIDE PRESSURE SPECIFICATIONS table. Low side pressure remains constant at 25-45 psi (1.8-3.2 kg/cm2 ) throughout normal operating range.
A/C SYSTEM PERFORMANCE SPECIFICATIONS
| Ambient Temperature °F (°C) | Outlet Air Temperature °F (°C) |
|---|---|
| 59 (15) | 34-46 (1-8) |
| 68 (20) | 34-46 (1-8) |
| 77 (25) | 34-46 (1-8) |
| 86 (30) | 34-46 (1-8) |
| 95 (35) | 36-48 (2-9) |
| 100 (38) | 37-51 (3-11) |
A/C SYSTEM HIGH SIDE PRESSURE SPECIFICATIONS
| Ambient Temperature °F (°C) | psi (kg/cm2 ) |
|---|---|
| 60 (16) | 75-175 (5.3-12.3) |
| 70 (21) | 100-200 (7-14) |
| 80 (27) | 125-230 (8.8-16.2) |
| 90 (32) | 150-260 (10.5-18.3) |