High discharge pressure, high suction pressure, high subcooling, and high compression ratios are all symptoms of a (n) _________________________. C. 35 degrees F Depending on the cause of the problem, you might have to opt for repair or replace the component. A. comfort cooling This will cause both the condenser and evaporator pressures to be lowered. Liquid subcooling will also increase because of most of the refrigerant charge is housed in the condenser. A. an overcharge It isnt difficult to test the AC pressures as long as you have a high-quality set of gauges. . (Reporting by George Obulutsa; Writing by Hereward Holland; Editing by Sofia Christensen, Angus MacSwan and Leslie Adler), Copyright 1995- If the problem in your evaporator coil is reversible by simple actions, then its better to repair it. B. We are so thrilled to have found Peter as our new mechanic. Check the gauges and evaluate the reading. NAIROBI (Reuters) - Pathologists started autopsies on Monday on more than 100 bodies linked to a Kenyan religious cult whose leader allegedly instructed them to starve . Symptoms A stuck open TXV will flood and freeze the evaporator core, possibly damaging the compressor with incompressible liquid. Moisture in the air also collects on the cold metal surface of the evaporator and eventually drips into a collection drain tube. Would a 1 lb refrigerant loss result in icing? This is a common problem faced by car owners, especially those with older vehicles. It's all about the temperature/pressure relationship, and how pressure affects the boiling point of the refrigerant. You may also see foaming oil in the sight glass with a low oil level. Hg A stuck closed TXV will leave an evaporator starved of refrigerant and the compressor deprived of its lubricating oil. 10 degrees F above the water inlet temperature Saab 9-3 L4-2.0L Turbo - Heating AC - Phoenix, Arizona. However, there are a few different potential sources of warm airflow, which is why professional diagnostics are essential to uncovering the exact cause of your AC issues. Repairs covered by 12-month/12,000-mile warranty. High Sub Cooling = Flooded Condenser Low Sub Cooling = Starved Condenser To Determine Delta T (Temperature difference across the coil): 1. He said the matching process would take at least a month to complete. Visit our privacy You will see high pressures even if you have the engine turned off. Ben is the consummate professional - knowledgeable, but additionally friendly and personable. B. a dirty condenser coil The best answers are voted up and rise to the top, Not the answer you're looking for? When one component goes bad, the whole system will not work as intended. When the refrigerant reaches the end of the evaporator, it's a cool vapor. If there is fuel and the engine will not start up when it is at operating temperature, then either the crankshaft position sensor is getting hot and not making a connection or the coolant temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) is evaporator temperature sensor replacement. d) it is not affected by dirt or frost build-up. ), it might need either repair or replacement. However, the coil will eventually give up and will require repair or replacement.