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Test if Genesis G90 expansion valve is working

Heating & Air Conditioning Specialist
George Wilson
You ask how to replace expansion valve in your vehicle, I’ll show you tips for expansion valve replacement the right way!
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Will expansion valve cause high pressure?

If the expansion valve is stuck open or clogged, the A/C system will not cool properly. A clogged valve will increase the pressure in the system and cause the A/C compressor to overheat. If the valve is stuck open, too much refrigerant is allowed to pass through the system and into the compressor.

What PSI should an expansion tank be set at on a Genesis G90?

Expansion tanks are pre-charged with a 40 PSI air charge. If the inlet water pressure is higher than 40 PSI,the expansion tank's air pressure must be adjusted to match that pressure but must not be higher than 80 PSI.

Why does refrigerant get cold when it expands on a Genesis G90 2023?

When the Freon gas is compressed, its pressure rises, making it very hot. Next, the hot Freon gas moves through a series of coils, which has the effect of lowering its heat and converting it to liquid. The Freon liquid then flows through an expansion valve, which causes it to cool down until it evaporates.

How does automatic expansion valve work on a Genesis G90?

Automatic expansion valve works in response to the pressure changes in the evaporator due to increase in refrigeration load (pressure increases) or due to decrease in refrigeration load (pressure decreases).

What size TXV do I need on a 2023 Genesis G90?

TXV sizing should be based on the compressor capacity and the evaporating temperature conditions at which the system needs to be operating. It's also necessary to determine how much pressure drop will be available to the expansion valve. Nungesser describes pressure drop as being similar to a faucet in your house.

How do you replace the expansion valve on a Genesis G90 2022?

How to Replace the Expansion Valve - Mazda 5 3 - So this big one just put a screw a tiny screwdriver on the slot right there and it should release. And then disconnect unwrap the foam. And take out this black box for better access.
How to Replace the Expansion Valve - Mazda 5 3 -.

How do you test an electronic expansion valve?

Perform an "Closed Valve Test" per Service Facts instructions. Remove the stepper motor from the EEV 15 seconds after jumping the pins. If the valve is closed and refrigerant continues to flow, then check valve is leaking. Use a pinch off tool and crimp the tubing between the check valve & EEV.

Which of the following steps is recommended when converting an R 12 system to R 134a on a Genesis G90?

Which of the following steps is recommended when converting an R-12 system to R-134a? d. Remove all oil in the system and replace it with the R134a type and the same amount. In an R-12 to R-134a conversion, a high-pressure cutoff switch should be installed if the system does not have one.

Where is expansion valve f150?

F-150 High Speed Fans Stay On and Poor A/C (Expansion Valve) And today's project is we're going to change out the expansion valve which is that right right there behind that line it's right up on the firewall.
F-150 High Speed Fans Stay On and Poor A/C (Expansion .

How many expansion valves are there?

There are seven main types of expansion devices: Thermal expansion valves (TEVs).
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Comments on how to fix expansion valve on a Genesis G90:
Thanks for your help broski
Thank you for the quick response. :) I will do this today and film it. I changed out my sway bar links and filmed it. There are no videos at all for my vehicle. :(I guess my vehicle type doesn't break :) Thank you again
Where is it on an '86 Chevy van?
Anyone else realize kickstart my heart was the song at the end just sped up?
damn 16mm nut is rusted to my fuel line...been soaking it with deep creep for days. My area is heck of a lot rusted out than this vid.
Thank you.
hi, great video :) I have a 2003 Chevy Tracker 2.5 ltr (6 cyl) 2 WD. I purchased the filter already. Are there any differences between this video and my vehicle? I know things change over the years, so wondering if you know if anything occurred. Thank you.
Thanks for the video. This helped me out a lot took me about 15 minutes to replace my filter and now my truck is running well. 
I have a 95 g20. I heard my engine backfire and lost all power. I checked the fuel pump and filter. they're working fine but the engine won't turn over and it won't let me give it gas to help it. any ideas?
Hey how did you Get the plate completely off to work with the lines? Did you remove the radiator lines?
Thanks couldn't find anything about changing the Expansion valve didn't know if I had to take the - out or if I could just get right to it thanks again
Escalade is blowing Hot air readings of gauges are 125 High and 55-60 Low when compressor comes on, note compressor is coming on about every 30 seconds what do you think problem could be, could tube be clogged?
2005 Yukon Denali. I serviced the A Had leaking Schraeder valve. Replaced that and orifice tube which looked brand new. Front blows cold. Rear is hot. I reached up under the right rear wheel well. The large a line was cold, the small one hot. Could this expansion valve be my problem? Thanks.
Great job. My Tahoe is not really cooling in back. I will check and replace these orifice tubes and expansion valve. Thank you.
My 01 Tahoe is doing the same thing. When I replace the compressor should I replace both evaporators and condenser along with flushing the system?
Great video, lots of help, wish you would of show us, at least me, since I new, on how to you recharge the Freon back in...
Such a nice video and really appreciate the effort you put on this. Thanks a lot!!
Where is this orifice tube located
Sir I need more questions HVAC short questions ans
What a good video. IT helped me to remplace by my self. Excelente vídeo.