A/C System Performance
WARNING: This page is about a different car, the 1998 Mercury Tracer. However, it is still accessible from the selected car via links, so may be relevant.
- Park vehicle out of direct sunlight. Install A/C manifold gauge set. Start engine and allow it to run at 1500 RPM. Set A/C controls to outside air, panel (vent) mode, full cold, and A/C button on.
- Set blower/fan on high speed and open windows. Operate system for 10 minutes to allow system to stabilize. Insert thermometer in center vent, and measure temperature.
- Temperature must be 33-47°F (0.6-8°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 HIGH SIDE PRESSURE SPECIFICATIONS
| Ambient Temp. °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) |