car ac diagnosticmsci world ticker

Thank you brother . Your car's air conditioning system works just like a refrigerator or your home air conditioning.
Depending on the size of the leak it may take several weeks to show up.As promised - follow-up. They did a diagnostics and say the high side pressure is too high and suggest taking it back for a flush, clean and re-gas. Compare this pressure with the ambient temperature to gauge the amount of refrigerant in the system. Can you help?Not enough information but, sounds like a stuck open TXV/H-block.Chevy trucks use electric actuators. Many times this is confused with poor AC or Heater performance due to the fact that the low airflow cannot keep the vehicle cool/warm.The airflow across the evaporator is used for cooling the air. Feel the lines, is there a pressure/temperature drop at the TXV/Orifice Tube? Ambient temp is 88 to 90 degrees, about 65% to 75% humidity. A hot water valve closes the flow of hot coolant thru the heater core during the AC operation. I pulled a vacuum on the system prior to charging.

Depending on the system, there are at least three to four doors controlled by cables, vacuum actuators or electronic motors.All the airflow goes thru both the evaporator then the heater core. Turn on the key and let it reset for 1 minute. Thanks again for the pointer.It sounds like your vehicle has dual zones. If not front ac control problem.When I try to connect the coupler to the low side, it gives me a reading of 80-100 psi and it doesn't stay secure. If the system is properly charged it seems the compressor is not working up to par.I recently replaced my ac compressor, drier condenser, and front expansion valve on my 2006 Dodge Durango and my ac compressor clutch does not fully engage and squeals. If it is barely cool or warm it is an ac system (low Refrigerant) problem.Thanks Mike. When you shut off the AC you hear a hissing noise. Nissan Altima - Car AC Repair - Winter Park, FloridaAlexander Was professional, professional, and friendly. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. This evening I accidentally left the key in "on" position and door open with dome light on & headlights on aic. If your AC system has either quit working or has stopped working well, you're faced with driving your vehicle around with the windows down - which brings little relief when it is hot outside. Many vehicles are driven for years and years without needing any refrigerant added to the AC system. I would bet it is less than half charged.Question: 2008 Merc Grand Marq, a/c system is the completely auto type. If the sight glass is clear liquid the system is fully charged. I've changed the condensor, expansion valve and vacuum. Don't see any evidence of a leak, but visual is no guarantee.With the temp being 85 to 90 degrees the static pressure should be higher. See labor & parts costs upfront, so you can book with confidence. I also added 1/4 oz UV dye, FYI. If they did, use a black light flashlight and the leak will show up bright yellow/green.
The high side pressure should be equal to or higher off and running.Sounds like a vacuum actuator problem.

_________________________05 TSX ac ice cold last summer into late fall. Should be a tag on the radiator support.I charged the A/C system. After shutdown and re-start of vehicle, the compressor cycled as normal once the proper refrigerant amount was reached. and started engine again but A/C refused to cool.I layed underneath and could turn clutch by hand, ¼ turn or so of clutch felt like I hit a detent. When using a recovery, recycle and recharge machine, you did not state wheather the car engine will be running or the engine will be switch off throughout all the phases or recovery,recyclying, evacuation and recharging process.Copyright © 2020 HubPages Inc. and respective owners. The car is old so reluctant to spend too much on it if I can get away with it.Sounds like the blend door is not sealing all the way. If the readings are very high then you may have a problem with air trapped in the system or an airflow problem with the condenser. Any ideas?On the GMC I believe you pull the HVAC /ECAs fuse under the hood for 1 minute. Something may have fallen down inside the plenum.checked the blend door actuator and it is working fine.removed the actuator and manually turned the door. But the high side is extremely low. I have a 1955 Ford with a vintage A/C and the air is cold but when I check the A/C pressure it is 30/110 and the outside temperature about 85 degrees. It does pull down to about 55 psi when holding the throttle at 2000 rpm. Use the leak tester for larger leaks and the Dye with a black light for smaller leaks. That still doesn't tell you how much is in the rest of the system.I have a 2004 Honda CRV. Do you think the expansion valve is stuck open or check valves in the compressor. In 92 degree heat fan finally quit completely and got a check engine code for overheat. Evacuate for 30 minutes. The system runs but not very cold. The quick cycling of the compressor is also an indicator. Ambient temperature 30 degC. The system should cool down to 40 degrees.I can't turn off my a/c. Charge the system and run for a while. If that doesn't work the actuator need to be replaced.Sound like the compressor is being shut off by the computer or a bad connection. The car is a 2006 Hyundai Accent.If the clutch has power to it after shut off, the AC relay may be stuck on.What is wrong when your a/c is in retard section of low side gauge?This means your low side pressure is above 150psi. Recover the system and measure the refrigerant.

The statements expressed above are only for informational purposes and should be independently verified. System must be overcharged or your gauges are somehow connected wrong.My car reads 30psi low side at idle and high side reads 70-75 psi...no cooling effect...static pressure is 50psi... Ambient temperature is 30.c... Is my AC is undercharged?What causes the hig side pressure to be low?

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