What to do about a clogged expansion valve on a Honda Civic?
Replace the expansion valve. Discharge temperature is low, and the airfl ow from vents is restricted. Frozen evaporator Run the fan with A/C compressor off, then check evaporator temperature sensor. Expansion valve is frosted. Clogged expansion valve Clean or replace.
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
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.
How do you repair a Honda Civic a / C?
1. Connect a R-134a manifold to the high pressure and the low pressure service ports. 2. Record the relative humidity and ambient air tem- perature. 3. Open the globe box. Remove the glove box stop on each side, then let the glove box hang down. 4. Insert a thermometer in the dash center vent. 5.
How to replace an expansion valve in your car?
How to replace a bad expansion valve in car air conditioning (AC) system. Expansion valve location, inspection, removal and replacement. DIY car repair with Scotty Kilmer, an auto mechanic for the last 42 years. 1. AC PAG Oil: http://amzn.to/2CA2wVm 2. AC Gauges: http://amzn.to/2BIru4v 3. Screwdriver set: http://amzn.to/2j92UCG 4.
Why is my Honda Civic a / C not working?
Clogged condenser or radiator fi ns A/C condenser or radiator fan not work- ing properly Clean. Check voltage and fan rpm. Check fan direction. Line to A/C condenser is excessively hot. Restricted fl ow of refrigerant in system Restricted lines. Discharge pressure abnormally low Excessive bubbles in sight glass; A/C condenser is not hot.
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.
How to jump 3 wire AC pressure switch easily?
Check the numbers printed on your AC and connect wires according to it. You need to bypass 3 wire AC pressure switch through the B1 to B4. This is done to power the compressor clutch. When you do this, the connection will send 0-5 volts of pressure through the PCM fuse.
Can a Honda Civic jump the pressure switch?
Jumping the pressure cycling switch is common practice on domestic CCOT systems, but the Civic is temperature cycled and fully controlled by the ECM.
Can you jump a 3 wire AC switch?
The AC runs perfectly, but you cannot control it with the button. AC systems in vehicles run with a pressure switch. You might have to do some repairs by yourself to make it run correctly again. You can jump three-wire AC pressure switch to control the AC system as well.
What happens when you jump the low pressure switch?
Second, if you are going to jump the compressor clutch under this condition, you do not want to leave it running for long. The oil for the compressor is carried by the refrigerant vapor, if you do not have enough refrigerant in the system, you will not have enough oil flowing to the compressor.
What’s the problem with my Honda Civic Si?
Working on two Civics in the family with intermittent AC issues. Both are ice cold in the morning and quit blowing cold later when it gets hotter outside. One is an ’06 Civic Si and the other is an ’08 Civic EX-L. I replaced the AC Clutch Relay, didn’t fix the problem. When they aren’t blowing cold, the Compressor clutch is OFF.