Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are features you can't use and images you can't see. Registration is simple, fast, and completely free. If you're already a member please log in to your account to access all of our features: Join our community! |
| AC expansion valve making noise? | |
|---|---|
| Tweet Topic Started: May 15 2018, 03:33 PM (141 Views) | |
| Swift-guy | May 15 2018, 03:33 PM Post #1 |
|
Member
![]() ![]() ![]() ![]() ![]()
|
I have replaced the (very likely to be leaking) condenserand got it refilled yesterday. This valve has been making noise before though. https://streamable.com/tilkp Charge was 370 gram |
![]() |
|
| blue_can | May 17 2018, 11:31 PM Post #2 |
|
New Member
![]() ![]() ![]() ![]()
|
Hissing noise at the expansion valve is not unusual. The high pressure liquid refrigerant is turning into low pressure liquid along with some flash gas so the boiling of the refrigerant will create some noise. The noise tends to be louder when undercharged (at least up to a point) since there will be more vapor and less liquid on the low side of the expansion valve. If it was charged correctly and the performance matches that in the factory manual no reason to be concerned about the noise. |
![]() |
|
| Swift-guy | May 18 2018, 04:02 AM Post #3 |
|
Member
![]() ![]() ![]() ![]() ![]()
|
turns out they severely underfilled it with their dumb machines. |
![]() |
|
| blue_can | May 18 2018, 09:51 AM Post #4 |
|
New Member
![]() ![]() ![]() ![]()
|
I missed that you had mentioned the charge weight. Yes it should have been closer to 500 grams. |
![]() |
|
| Swift-guy | May 19 2018, 11:14 AM Post #5 |
|
Member
![]() ![]() ![]() ![]() ![]()
|
Went back and asked for 700 because that is what it needs. Now there is no noise and it blows proper cold |
![]() |
|
| geogonfa | May 19 2018, 12:19 PM Post #6 |
![]()
|
|
![]() |
|
| 1 user reading this topic (1 Guest and 0 Anonymous) | |
| « Previous Topic · Air Conditioning/Heating · Next Topic » |


Welcome to the all new Geo Metro Forum. We hope you enjoy your visit.


![]](http://z3.ifrm.com/static/1/pip_r.png)




7:53 PM Jul 10