A/C System Performance
WARNING: This page is about a different car, the 1998 Cadillac Eldorado and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
- Park vehicle in shaded area. Ventilate interior. Vent exhaust. Install 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.
- Place transmission in Park or Neutral. Start and idle engine for 10 minutes. Record outlet temperature, and high side and low side pressures. Turn 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) |
49-55 (9-13) |
25-35 (1.8-2.5) |
155-185 (10.9-13.0) |
| 70 (21) |
52-58 (11-14) |
35-45 (2.5-3.2) |
195-225 (13.7-15.8) |
| 80 (27) |
52-58 (11-14) |
35-45 (2.5-3.2) |
30-260 (16.1-18.3) |
| 80 (27) |
60-66 (16-19) |
45-55 (3.2-3.9) |
265-295 (18.6-20.7) |
| 90 (32) |
57-63 (14-17) |
42-52 (3.0-3.7) |
270-300 (19.0-21.1) |
| 90 (32) |
70-75 (21-24) |
55-65 (3.9-4.6) |
310-340 (21.8-23.9) |
| 100 (38) |
65-71 (18-22) |
52-62 (3.7-4.4) |
310-350 (21.8-24.6) |
| 100 (38) |
80-86 (27-30) |
70-85 (4.9-6.0) |
380-420 (26.7-29.5) |