Performance Test
WARNING: This page is about a different car, the 2005 Kia Spectra5, 2005 Kia Spectra, and 2004 Kia Spectra. However, it is still accessible from the selected car via links, so may be relevant.
- Install the manifold gauge set.
- Run the engine at 2,000 rpm and set the controls for maximum cooling and high blower speed.
- Keep all windows and doors open.
- Place a dry-bulb thermometer in the cool air outlet.
- Place a wet-dry thermometer close to the inlet of the cooling unit.
- Check that the reading on the high pressure gauge is 1,373-1,575 kPa (14-16 kg/cm2 , 199-228 psi). If the reading is too high, pour water on the condenser. If the reading to too low, cover the front of the condenser.
- Check the reading on the dry-bulb thermometer at the air inlet at 25-35°C (77-95°F).
- Calculate the relative humidity from the psychrometric graph shown in illustration by comparing the wet-and dry-bulb reading at the air inlet.
HOW TO READ THE GRAPH:
After measuring the temperatures of the wet and dry-bulb thermometers at the evaporator air inlet, relative humidity (%) can be obtained. Example: Dry-and wet-bulb temperature at the evaporator air inlet are 25°C (77°F) and 19.5°C (67°F) respectively, the point of intersection of the dotted lines in the graph shown in the following illustration indicates 60%.
- Measure the dry-bulb temperature at the cool air outlet, and calculate the difference between the inlet dry-bulb and outlet dry-bulb temperatures.
- Check that the intersection of the relative humidity and temperature difference falls within the block shown in the illustration. If the intersection is within the block, cooling performance is satisfactory.