What causes high refrigerant pressure?
Another possible cause is an excessive amount of refrigerant in the system, commonly referred to as an overcharge. This will cause the excess liquid refrigerant to take up condensing space, which will cause less space to condense the refrigerant, leading to an elevated discharge pressure.
What should high side pressure be at idle?
If you don’t have a calculator available twice the air temperature plus 50 will give you a ballpark figure. This means that if it is approximately 80 degrees outside and the engine is at idle the high-side pressure should range between 176 and 200 psi.
What should the pressure be on the high side of the a / C?
Normal pressures range from 25 to 30 psi for the low side and 175 to 200 psi on the high side. The main factors that affect the A/C system pressures are the ambient air temperature and the RPM of the engine.
What causes low side and high side pressure to fluctuate?
An A/C compressor with internal failure will normally affect the low side gauge reading as well. Refrigerant will bleed back to the low side though worn or defective reed valves or pistons raising the low side or cause it to fluctuate. What should the low-side and high-side pressures be?
When to change AC low side high side low pressure?
Similarly, the fan also has to spin when you turn the system on. When all of these components appear to work fine and the AC low side high, high side low problem persists, you may need to change the compressor to fix the unit. However, it is always better to consult a mechanic before deciding to replace any part.
What’s the air pressure in a Honda Civic?
Ambient temp Humidity % Inlet air temp Static system pressure 45 psi minimum Center vent temp ~30°F < ambient Low side pressure Typical: ~ 30 psi High side pres- sure Typical: 2.2 to 2.5 X ambient °F Pressure behavior when AC is shut off: High Side Pressure PSI Low Side Pressure PSI Center Vent Air Temperature °F Inlet Air Temperature °F 1.
What happens when you stop the Honda Civic a / C compressor?
Discharge pressure abnormally high After stopping A/C compressor, pres- sure drops about 196 kPa (2.0 kgf/cm2, 28 psi) quickly, and then falls gradually. Air in system Recover, evacuate, and recharge with specifi ed amount. No bubbles in sight glass when A/C condenser is cooled by water.
What do you need to know about Honda Civic a / C?
2006-2011 Honda Civic A/C Diagnosis and Repair EXPANSION VALVE (Meters the required amount of refrigerant into the evaporator) RECEIVER/DRYER DESICCANT (Traps debris, and removes moisture) A/C COMPRESSOR (Suction and compression) A/C CONDENSER (Radiation of heat) A/C PRESSURE SENSOR
If you don’t have a calculator available twice the air temperature plus 50 will give you a ballpark figure. This means that if it is approximately 80 degrees outside and the engine is at idle the high-side pressure should range between 176 and 200 psi.