A/C System Performance
- Park vehicle in shaded area. Ventilate interior. Vent exhaust. Install manifold gauge set. Measure and record ambient temperature and relative humidity. Close doors and windows. Set controls to AUTO, select maximum blower speed, and set temperature control to coldest value. Insert thermometer into center outlet.
- Set transmission in Park or Neutral. Start and idle engine for 10 minutes. Record outlet temperature, and high-side and low-side pressures. Turn ignition switch to OFF position (engine off). Compare readings with specifications. See A/C PERFORMANCE SPECIFICATIONS table.
A/C PERFORMANCE SPECIFICATIONS
| Ambient Temp. - °F (°C) | Outlet Temp. - °F (°C) | Low-Side Pressure - psi (kg/cm2 ) | High-Side Pressure - psi (kg/cm2 ) |
|---|---|---|---|
| 70 (21) | 49-58 (9-14) | 25-45 (1.8-3.2) | 155-225 (10.9-15.8) |
| 80 (27) | 52-66 (11-19) | 35-55 (2.5-3.9) | 230-295 (16.1-20.7) |
| 90 (32) | 57-75 (14-24) | 42-65 (3.0-4.6) | 270-340 (19.0-23.9) |
| 100 (38) | 65-86 (18-30) | 52-85 (3.7-6.0) | 310-420 (21.8-29.5) |