Performance Test @ 72 Km/h (45 Mph)

72 km/h (45 mph) Test
Record the manifold gauge pressures, outlet temperature and ambient air temperature with the following preset vehicle conditions:

IMPORTANT: If the ambient air temperature is lower than 5° (40°F), the A/C compressor will not be enabled.

1. Install thermometer in right center outlet.
2. Open doors and windows to stabilize interior temperature with outside ambient air temperature.
3. Recirc Off (outside air).
4. Set temperature knob to full cold.
5. Select 3rd blower speed.
6. Depress A/C button.
7. Vehicle running at 72 km/h (45 mph) with engine fully warmed up.
8. Continue running until system pressures and outlet temperature stabilize. Usually five to seven minutes.
9. Record pressure and temperatures.
10. Compare readings to normal system performance charts then continue down diagnostic flow chart.

Normal System Performance

Normal System Performance 72 Km/h (45 MPH):