Manifold Gauge Set Method
WARNING: This page is about a different car, the 1998 Dodge Intrepid and 1998 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
- Attach clamp-on thermocouple to liquid line, as close to condenser outlet as possible. Attach manifold gauge set to high-side and low-side connectors.
- Set parking brake, and place transaxle in Park position. Start engine and allow to idle. Set A/C controls to outside air, panel mode, full cool, and high blower speed. Turn A/C on, and open windows. Operate system for a few minutes to allow system to stabilize.
- Place cardboard over front grille area, to block airflow through part of condenser, to set A/C pressure to 260 psi (18.3 kg/cm2 ). This will stop cooling fans from alternating speeds and maintain constant pressure.
- Record temperature reading at liquid line and discharge pressure reading on gauges. Compare readings with values in REFRIGERANT CHARGE LEVEL table.
- Depending on system charge condition, corrections are made 2 ounces at a time. Each time a correction is made, recheck readings to ensure proper charge. Total system refrigerant capacity is 28 ounces.
REFRIGERANT CHARGE LEVEL
| Liquid Line Temperature °F (°C) | (1) Discharge Pressure psi (kg/cm2 ) | ||
|---|---|---|---|
| 40 (4.4) | 53-75 (3.7-5.3) | ||
| 60 (15.6) | 81-104 (5.7-7.3) | ||
| 80 (26.7) | 111-142 (7.8-10.0) | ||
| 100 (37.8) | 156-194 (11.0-13.6) | ||
| 120 (48.9) | 208-259 (14.6-18.2) | ||
| 140 (60.0) | 272-331 (19.1-23.3) | ||
| 160 (71.1) | 353-420 (24.8-29.5) | ||
| 180 (82.2) | 447-516 (31.4-36.3) | ||
|
|||